Rolling Magma
Level: (1–20)
Cost: (6–23) Mana
Cast Time: 0.70 sec
Critical Strike Chance: 5.00%
Effectiveness of Added Damage: (230–280)%
Requires Level (1–70), (10–155) Int
Lob a fiery orb that deals area damage as it hits the ground. The skill chains, bouncing forward to deal damage multiple times.
Deals (9–1245) to (12–1868) Fire Damage
Chains +(2–3) Times
+(0–0.4) metres to radius
Projectiles can Chain when impacting the ground
Projectiles do not change direction when Chaining

Additional Effects From Quality:
Chains +(0–2) Times
Place into an item socket of the right colour to gain this skill. Right click to remove from a socket.
Quest /2
ActQuestNPCCharacter
1Enemy at the GateQuest RewardWitch · Templar
1Enemy at the GateNessaScion · Shadow · Templar · Witch
Rolling Magma /6
A fire based, projectile, area of effect spell. Projectiles bounce towards the target dealing fire damage. The skill chains at higher levels resulting in the projectiles bouncing more times.
NameShow Full Descriptions
Combustion SupportGives Rolling Magma more fire damage, additional chance to ignite enemies and reduces the fire resistance of ignited enemies. This makes it a great all-round support for any fire based skill.
Lesser Multiple Projectiles SupportIncreases the amount of projectiles Rolling Magma casts, allowing it to hit more targets at once. At later levels, obtain the Greater Multiple Projectiles Support gem to hit enemies in a larger area.
Fire Penetration SupportReduces enemy resistance to fire damage, making them take more fire damage from Rolling Magma.
Spell Echo SupportRepeats Rolling Magma an additional time while also greatly increasing the cast speed.
Slower Projectiles SupportIncreases Rolling Magma's damage and decreases the distance between each chain, allowing one orb to impact on a pack of monsters multiple times.
Faster Casting SupportIncreases the cast speed of Rolling Magma, allowing the projectiles to be cast more frequently.
Level Effect /40
LevelRequires LevelIntCostDeals 9 to 12 Fire DamageChains +2 Times# metres to radiusExperience
111069, 122070
2212610, 1420308
3416612, 18201,554
4722716, 25206,667
51131824, 3620.126,047
61641937, 5620.149,725
720501051, 7720.195,714
824581170, 10420.1169,595
928671293, 13920.1283,759
10327513122, 18430.2453,996
11368314160, 24030.2703,128
12409215207, 31130.21,061,223
134410016267, 40130.22,065,870
144810917342, 51430.22,507,110
155211718437, 65530.35,798,936
165612519554, 83230.315,083,919
176013420701, 105230.327,792,735
186414221884, 132730.343,869,739
1967148221050, 157530.3242,081,556
2070155231245, 186830.4
2172241394, 209140.4
2274241559, 233940.4
2376251744, 261540.4
2478251949, 292340.4
2580262176, 326440.5
2682262430, 364440.5
2784272711, 406640.5
2886273023, 453540.5
2988283371, 505640.5
3090283756, 563440.5
3191283965, 594740.5
3292294184, 627640.5
3393294415, 662340.6
3494294659, 698840.6
3595294915, 737340.6
3696305186, 777840.6
3797305470, 820540.6
3898305770, 865540.6
3999306085, 912840.6
40100316418, 962740.6
Attribute /8

Rolling Magma

KeyValue
CostiLvl 1: Normal: 1xScroll of Wisdom
AcronymProjectile, Chain
BaseType Rolling Magma
Class Skill Gems
TargetTypesGround, Enemy
TypeSpell, Damage, Area, Trappable, Mineable, Totemable, Triggerable, Fire, Projectile, ProjectilesFromUser, Multicastable, Chains, CanRapidFire, AreaSpell
ItemTypeMetadata/Items/Gems/SkillGemMagmaOrb
Referencepoe.ninja, Community Wiki
Crucible Weapon /2
WeightDesc
1000 (T5)Fireball and Rolling Magma have 100% more Area of Effect
Modifiers to number of Projectiles do not apply to Fireball and Rolling Magma
1000 (T5)Fireball and Rolling Magma have 200% more Area of Effect
Modifiers to number of Projectiles do not apply to Fireball and Rolling Magma
Rolling Magma
Level: (1–20)
Cost: (6–23) Mana
Cast Time: 0.70 sec
Critical Strike Chance: 5.00%
Effectiveness of Added Damage: (230–280)%
Requires Level (1–70), (10–155) Int
Lob a fiery orb that deals area damage as it hits the ground. The skill chains, bouncing forward to deal damage multiple times.
Deals (9–1245) to (12–1868) Fire Damage
Chains +(2–3) Times
+(0–0.4) metres to radius
Projectiles can Chain when impacting the ground
Projectiles do not change direction when Chaining
base is projectile [1]
console skill dont chase [1]
is area damage [1]
monster projectile variation [1]

Additional Effects From Quality:
Chains +(0–2) Times
Place into an item socket of the right colour to gain this skill. Right click to remove from a socket.
Microtransactions /2
Acid Rolling Magma Effect
Your Rolling Magma becomes a flammable concoction.
Harbinger Rolling Magma Effect
Your Rolling Magma becomes a blue harbinger effect.
Supported By /103
  • Active Type: Spell, Damage, Area, Trappable, Mineable, Totemable, Triggerable, Fire, Projectile, ProjectilesFromUser, Multicastable, Chains, CanRapidFire, AreaSpell
  • Added Fire Damage Support
    Supports any skill that hits enemies.
    Greater Multiple Projectiles Support
    Supports projectile skills.
    Lesser Multiple Projectiles Support
    Supports projectile skills.
    Faster Projectiles Support
    Supports projectile skills.
    Added Cold Damage Support
    Supports any skill that hits enemies.
    Increased Area of Effect Support
    Supports any skill with an area of effect.
    Added Lightning Damage Support
    Supports any skill that hits enemies.
    Increased Critical Strikes Support
    Supports any skill that hits enemies.
    Increased Critical Damage Support
    Supports any skill that hits enemies.
    Knockback Support
    Supports any skill that hits enemies.
    Life Leech Support
    Supports any skill that hits enemies, causing those hits to leech life based on damage dealt.
    Added Chaos Damage Support
    Supports any skill that hits enemies.
    Stun Support
    Supports any skill that hits enemies, making it easier to stun enemies with those skills.
    Pierce Support
    Supports projectile skills.
    Trap Support
    Supports spells, or attacks that use bows or wands. Instead of using that skill, you will throw a trap that will use the skill for you when an enemy walks near it. Traps cannot use channelling skills.
    Item Rarity Support
    Supports any skill that can kill enemies.
    Faster Casting Support
    Supports non-instant spell skills.
    Concentrated Effect Support
    Supports any skill with an area of effect, regardless of whether that skill deals damage.
    Cold to Fire Support
    Supports any skill that hits enemies.
    Combustion Support
    Supports any skill that hits enemies.
    Elemental Proliferation Support
    Supports any skill that hits enemies, or could otherwise apply elemental ailments.
    Culling Strike Support
    Supports any skill that hits enemies. If enemies are left below 10% of maximum life after being hit by these skills, they will be killed.
    Iron Will Support
    Supports spell skills, making the increase to physical melee damage from strength also increase their spell damage.
    Spell Totem Support
    Supports spell skills that are not triggered. Instead of casting that spell, you will summon a totem that casts the spell for you.
    Blastchain Mine Support
    Supports spells, or attacks that use bows or wands. Instead of using that skill, you will throw a mine that will use the skill for you when you detonate it. Mines cannot use channelling skills.
    Chance to Flee Support
    Supports any skill that hits enemies.
    Blind Support
    Supports any skill that hits enemies.
    Fire Penetration Support
    Supports any skill that hits enemies, making those hits penetrate enemy fire resistance.
    Cold Penetration Support
    Supports any skill that hits enemies, making those hits penetrate enemy cold resistance.
    Lightning Penetration Support
    Supports any skill that hits enemies, making those hits penetrate enemy lightning resistance.
    Elemental Penetration Support
    Supports any skill that hits enemies, making those hits penetrate enemy elemental resistances.
    Chain Support
    Supports projectile skills, and any other skills that chain.
    Fork Support
    Supports projectile skills, making their projectiles fork into two projectiles the first time they hit an enemy and don't pierce it.
    Returning Projectiles Support
    Supports projectile skills.
    Spell Echo Support
    Supports spell skills, making them repeat when cast. Cannot support Vaal skills, totem skills, channelling skills, triggered skills, instant skills, retaliation skills, blink skills, or skills with a reservation.
    Power Charge On Critical Support
    Supports any skill that hits enemies.
    Burning Damage Support
    Supports any skill that hits enemies, or can deal burning damage directly.
    Hextouch Support
    Must support both a skill that hits enemies, and a hex curse skill to work. The hex will be applied when enemies are hit by the other skill. Cannot support totems, traps, or mines. Minions cannot apply hexes this way.
    Slower Projectiles Support
    Supports projectile skills.
    Cast on Death Support
    Each supported spell skill will be triggered when you die. Cannot support skills used by totems, traps, or mines. Vaal skills, channelling skills, and skills with a reservation cannot be triggered.
    Cast when Damage Taken Support
    Each supported spell skill will track damage you take, and be triggered when the total damage taken reaches a threshold. Cannot support skills used by totems, traps, or mines. Vaal skills, channelling skills, and skills with a reservation cannot be triggered.
    Cast when Stunned Support
    Each supported spell skill will have a chance to be triggered when you are stunned. Cannot support skills used by totems, traps, or mines. Vaal skills, channelling skills, and skills with a reservation cannot be triggered.
    Block Chance Reduction Support
    Supports any skill that hits enemies.
    Physical to Lightning Support
    Supports any skill that hits enemies.
    Ice Bite Support
    Supports any skill you use to hit enemies yourself. Cannot support skills used by totems, traps, or mines.
    Hypothermia Support
    Supports any skill that deals damage.
    Innervate Support
    Supports any skill you use to hit enemies yourself. Cannot support skills used by totems, traps, or mines.
    Critical Strike Affliction Support
    Supports any skill that hits enemies.
    Void Manipulation Support
    Supports any skill that deals damage.
    Controlled Destruction Support
    Supports attack skills, or spell skills that deal damage.
    Swift Affliction Support
    Supports any skill that has a duration, or can hit enemies to inflict ailments on them.
    Elemental Focus Support
    Supports any skill that hits or burns enemies, or inflicts elemental ailments.
    Ignite Proliferation Support
    Supports any skill that hits enemies.
    Chance to Bleed Support
    Supports attack skills.
    Chance to Poison Support
    Supports any skill that hits enemies.
    Deadly Ailments Support
    Supports any skill that hits enemies.
    Decay Support
    Supports any skill that hits enemies.
    Efficacy Support
    Supports any skill that deals damage or has a duration.
    Vile Toxins Support
    Supports any skill that hits enemies.
    Immolate Support
    Supports any skill that hits enemies.
    Unbound Ailments Support
    Supports any skill that hits enemies or inflicts ailments
    Brutality Support
    Supports any skill that deals damage.
    Arcane Surge Support
    Each supported spell will track how much mana you spend on it, granting a buff when the total mana spent reaches a threshold. Cannot support skills used by totems, traps, mines or skills with a reservation.
    Volley Support
    Supports skills that fire projectiles from the user. Does not affect projectiles fired from other locations as secondary effects. Does not support skills that fire projectiles in a spiral.
    Summon Phantasm Support
    Supports skills that can hit enemies, or create minions. When those skills or minions kill enemies, or hit rare or unique enemies they will have a chance to summon a Phantasm minion, which uses a piercing projectile spell that deals physical damage.
    Bonechill Support
    Supports any skill that can chill enemies or create chilling areas.
    Energy Leech Support
    Supports any skill that hits enemies, causing those hits to leech energy shield based on damage dealt.
    Intensify Support
    Supports spell skills that you cast yourself. Cannot support triggered skills, Vaal skills, instant skills, channelling skills, skills with a reservation or which create minions, or skills used by totems, traps, or mines.
    Unleash Support
    Supports spell skills, making their effect reoccur when cast. Cannot support skills with cooldowns, triggered skills, Brand skills, Vaal skills, channelling skills, skills with a reservation, or skills used by totems, traps, or mines. Cannot modify the skills of minions.
    High-Impact Mine Support
    Supports spells, or attacks that use bows or wands. Instead of using that skill, you will throw a mine that will use the skill for you when you detonate it. Mines cannot use channelling skills.
    Greater Volley Support
    Supports skills that fire projectiles from the user. Does not affect projectiles fired from other locations as secondary effects. Does not support skills that fire projectiles in a spiral.
    Awakened Added Fire Damage Support
    Supports any skill that hits enemies.
    Awakened Brutality Support
    Supports any skill that deals damage.
    Awakened Burning Damage Support
    Supports any skill that hits enemies, or can deal burning damage directly.
    Awakened Fire Penetration Support
    Supports any skill that hits enemies, making those hits penetrate enemy fire resistance.
    Awakened Added Cold Damage Support
    Supports any skill that hits enemies.
    Awakened Chain Support
    Supports projectile skills, and any other skills that chain.
    Awakened Cold Penetration Support
    Supports any skill that hits enemies, making those hits penetrate enemy cold resistance.
    Awakened Deadly Ailments Support
    Supports any skill that hits enemies.
    Awakened Fork Support
    Supports projectile skills, making their projectiles fork into two projectiles the first two times they hit an enemy and don't pierce it.
    Awakened Swift Affliction Support
    Supports any skill that has a duration, or can hit enemies to inflict ailments on them.
    Awakened Void Manipulation Support
    Supports any skill that deals damage.
    Awakened Added Chaos Damage Support
    Supports any skill that hits enemies.
    Awakened Added Lightning Damage Support
    Supports any skill that hits enemies.
    Awakened Controlled Destruction Support
    Supports attack skills, or spell skills that deal damage.
    Awakened Hextouch Support
    Must support both a skill that hits enemies, and a hex curse skill to work. The hex will be applied when enemies are hit by the other skill. Cannot support totems, traps, or mines. Minions cannot apply hexes this way.
    Awakened Elemental Focus Support
    Supports any skill that hits or burns enemies, or inflicts elemental ailments.
    Awakened Increased Area of Effect Support
    Supports any skill with an area of effect.
    Awakened Lightning Penetration Support
    Supports any skill that hits enemies, making those hits penetrate enemy lightning resistance.
    Awakened Spell Echo Support
    Supports spell skills, making them repeat when cast. Cannot support Vaal skills, totem skills, channelling skills, triggered skills, instant skills, retaliation skills, blink skills, or skills with a reservation.
    Awakened Unbound Ailments Support
    Supports any skill that hits enemies or inflicts ailments
    Awakened Unleash Support
    Supports spell skills, making their effect reoccur when cast. Cannot support skills with cooldowns, triggered skills, Brand skills, Vaal skills, channelling skills, skills with a reservation, or skills used by totems, traps, or mines. Cannot modify the skills of minions.
    Archmage Support
    Supports spell skills that deal damage with hits and have no reservation. Cannot support arcane skills, Brand skills, Orb skills, Vaal skills, or skills used by totems, traps or mines. Cannot modify the skills of minions.
    Pinpoint Support
    Supports projectile spells you cast yourself. Cannot support triggered skills, Vaal skills, instant skills, channelling skills, skills with a reservation or which create minions, or skills used by totems, traps, or mines.
    Trinity Support
    Supports skills that hit enemies, causing them to gain bonuses while you have resonance of all three elements, and to grant resonance of elements other than the highest one in a hit. There is a maximum of 50 Resonance for each Element. Cannot support triggered skills, instant skills, orb skills, brands, skills with a reservation, or skills used by totems, traps, or mines. Cannot modify the skills of minions.
    Cruelty Support
    Supports any skill that hits enemies. Minions cannot gain Cruelty.
    Overcharge Support
    Supports any skill that hits enemies.
    Spellblade Support
    Supports spells that hit enemies. Cannot modify the skills of minions.
    Devour Support
    Supports any skill that hits enemies.
    Sacrifice Support
    Supports spell skills that hit enemies and have no reservation. Cannot support brand skills, orb skills, channelling skills, Vaal skills or skills used by traps or mines. Cannot modify the skills of minions.
    Sadism Support
    Supports any skill that hits enemies.
    Rupture Support
    Supports attack skills.
    Rolling Magma Unique /1
    (10–15)% increased Fire Damage
    With at least 40 Intelligence in Radius, Rolling Magma deals 50% less Damage
    With at least 40 Intelligence in Radius, Rolling Magma deals 40% more Damage per Chain
    With at least 40 Intelligence in Radius, Rolling Magma
    has 10% increased Area of Effect per Chain
    Rolling Magma Monster /35
    NameModifiersSpectre
    First Mate CrastusMonsters grant 100% increased Experience
    15000% increased Rarity of Items Dropped
    cannot be stunned for ms after stun finished [2000]
    cannot be stunned while stunned [1]
    Y
    Telvar, the InebriatedMonsters grant 100% increased Experience
    15000% increased Rarity of Items Dropped
    cannot be stunned for ms after stun finished [2000]
    cannot be stunned while stunned [1]
    Y
    The Drunken Corsairignite art variation [2]Y
    Goatman Fire-raiserY
    Carnage PillarY
    DaemonY
    Sire of the Falling Skiesmonster base type attack cast speed +% and damage -% final [11]
    20% increased Projectile Damage
    display monster uses far shot text [1]
    monster reverse point blank damage -% at minimum range [60]
    monster no map drops [1]
    Y
    Fiery AttendantGain 25% of Physical Damage as Extra Fire DamageY
    Profane Acolytemonster penalty against minions damage +% final vs player minions [-30]Y
    Aspect of Ruination300% increased Quantity of Items Dropped
    800% increased Rarity of Items Dropped
    cannot be stunned for ms after stun finished [2000]
    cannot be stunned while stunned [1]
    Y
    Calxipher% increased Rarity of Items Dropped
    monster no map drops [1]
    monster additional quantity of dropped items in cruel +% [300]
    monster additional quantity of dropped items in merciless +% [600]
    monster additional rarity of dropped items in cruel +% [300]
    monster additional rarity of dropped items in merciless +% [600]
    +1 to maximum number of Summoned Totems
    kill traps mines and totems on death [1]
    Y
    Torment DaemonY
    Leli Goya, Daughter of AshMonsters grant 100% increased Experience
    15000% increased Rarity of Items Dropped
    cannot be stunned for ms after stun finished [2000]
    cannot be stunned while stunned [1]
    Y
    Avatar of the Goatmonster no drops or experience [1]Y
    Flame Motherignite art variation [1]Y
    Kiln MotherY
    Blessed Sisterignite art variation [1]Y
    Sanguine SisterY
    <>Cannot be Damaged
    harbinger base currency shard stack tenths to drop [22]
    harbinger base currency shard stack tenths to drop best of 3 outcomes [0]
    map related item drop chance +% final from league [-60]
    Y
    <>Cannot be Damaged
    harbinger base currency shard stack tenths to drop [22]
    harbinger base currency shard stack tenths to drop best of 3 outcomes [0]
    map related item drop chance +% final from league [-60]
    Y
    <>Cannot be Damaged
    harbinger base currency shard stack tenths to drop [22]
    harbinger base currency shard stack tenths to drop best of 3 outcomes [0]
    map related item drop chance +% final from league [-60]
    Y
    <>Cannot be DamagedY
    <>Cannot be Damaged
    unaffected by life modifiers [1]
    Y
    <>Cannot be Damaged
    harbinger base currency shard stack tenths to drop [38]
    harbinger base currency shard stack tenths to drop best of 3 outcomes [0]
    map related item drop chance +% final from league [-60]
    Y
    <>Cannot be Damaged
    harbinger base currency shard stack tenths to drop [38]
    harbinger base currency shard stack tenths to drop best of 3 outcomes [0]
    map related item drop chance +% final from league [-60]
    Y
    TESTCannot be DamagedY
    <>Cannot be DamagedY
    Farric Flamespitting Hellion% increased Rarity of Items Dropped
    monster no map drops [1]
    Y
    Fenumal Queen50% of Physical Damage Converted to Fire DamageY
    Vaal Saucer TurretY
    Templar War Maidenmonster ignores delve darkness mechanic [1]
    ignite art variation [1]
    monster beyond portal chance +% final [-66]
    monster hellscape charge +% [-66]
    Y
    Templar War Maidenmonster ignores delve darkness mechanic [1]
    ignite art variation [1]
    monster beyond portal chance +% final [-66]
    monster hellscape charge +% [-66]
    Cannot gain Charges
    Y
    Templar War Maidenignite art variation [1]Y
    Blighted Sisterignite art variation [1]Y
    Blighted Fire-raiserY

    Community Wiki

    Edit

    Rolling Magma

    Rolling Magma (previously known as Magma Orb) is a spell skill that launches a projectile that bounces on a parabolic curve that explodes on impact dealing fire damage in an area of effect. Effects that modify the number of times projectiles can chain changes the number of times Rolling Magma's projectile bounces instead.

    Skill functions and interactions

    • Rolling Magma's projectile is launched through the air from the caster's location and lands where the caster is currently targeting (up to a maximum range). This causes an explosion dealing fire damage and then bounces in the same direction that it was initially launched. The impact has a base radius of 14, and a base spacing between impacts of 16 .

    • Lesser Multiple Projectiles Support and Greater Multiple Projectiles Support increase the number of projectiles, and thus the area of effect. However, the explosions from Rolling Magma's splashdown do not overlap, meaning that each time the orbs strike down at the same time, damage is dealt only once to any given enemy. Spread of the projectiles can be controlled by targeting closer to or further way from the caster.

    • Chain Support increases the number of times a new projectile is created upon contact with the ground. The support gem adds +2 Chains, which results in an additional two projectiles. These projectiles do not readjust to aim toward enemies as other projectile skills with chain do. It is possible for projectiles created by separate chains to damage the same enemy, if positioned properly.

    • Concentrated Effect Support, Increased Area of Effect Support, and other modifiers to area size affect the radius of the explosion caused by the splashdown, but do not affect the maximum cast distance or the distance of each chain.

    • Faster Projectiles Support, Slower Projectiles Support, and other modifiers to projectile speed affect both the maximum cast distance, the distance of each chain and the delay between each chain. Increasing projectile speed means the orb travels further both on initial cast and subsequent chains while also reducing the delay between chains. Reducing speed reduces travel distances and increases the time each orb is airborne.

    • Fork Support and Pierce Support have no effect as the orb does not interact with enemies itself, and only ever contacts the ground or walls.

    • Can be used in left mouse button slot to cast and move.

    Version history

    VersionChanges
    3.17.0
  • Rolling Magma now deals 9 to 12 Fire Damage at gem level 1 (unchanged), up to 1245 to 1868 at gem level 20 (previously 1031 to 1546).
  • Now has 280% Effectiveness of Added Damage at all gem levels (previously 230%).
  • 3.15.0
  • Now has 230% Effectiveness of Added Damage (previously 185%).
  • (Undocumented in patch notes) Now deals 1031 to 1546 Fire Damage at gem level 20 (from 856 to 1284).
  • 3.13.0
  • Magma Orb renamed to Rolling Magma to avoid confusion with Orb skills.
  • Now clarifies that projectiles can't change direction while chaining (bouncing).
  • 3.12.0
  • Now has alternative gem quality.
  • 3.11.0
  • Now has an added Damage effectiveness of 185% (from 140%).
  • Now chains +2 times at gem level 1 (from +1), up to +3 times at gem level 20 (from +2).
  • Now deals 9 to 12 Fire Damage at gem level 1 (unchanged), up to 856 to 1284 Fire Damage at gem level 20 (from 716 to 1073).
  • Now gains base radius as the gem levels, up to +4 to radius at gem level 20 (previously did not gain radius).
  • 3.9.0
  • Magma Orb has received visual improvements.
  • 3.6.4
  • Improved the graphical performance of Magma Orb.
  • 3.6.0
  • Mana Cost at gem level 1 is now 6 (was 5).
  • Mana Cost at gem level 20 is now 23 (was 22).
  • Now deals 9 to 12 Fire damage at gem level 1 (from 8 to 10) and 716 to 1073 Fire damage at gem level 20 (from 699 to 1049).
  • 3.3.0
  • Now deals 8-10 fire damage at gem level 1 (up from 6-9), up to 699-1049 fire damage at gem level 20 (up from 637-956).
  • The speed at which the projectile bounces has been significantly increased.
  • 2.6.0
  • Explosion radius has been increased by 28%.
  • 2.4.0
  • Magma Orb can now be affected by projectile speed modifications.
  • 2.3.2
  • Characters and monsters now have a Cast upwards animation for casting Magma Orb, and for any future Spells that require an upwards cast.
  • 2.1.0
  • Damage has been increased by around 20% at all levels.
  • Now gains an additional chain at level 10, and another at level 21.
  • Damage effectiveness increased from 80% to 125%.
  • 2.0.0
  • Added to the game.

  • Wikis Content is available under CC BY-NC-SA 3.0 unless otherwise noted.