# Necropolis Grave ## +X to Y Modifier Tier Rating `+X to Y Modifier Tier Rating` is the calculation method for reducing Y tags，(Raising Modifier Tier Rating excludes lower tier Modifiers from rolling, distributing their roll chance among higher tier Modifiers of the same Modifier type)，formula `1 - 100/(X + 100)`。 X | cut rate - | - 50 | 1 - 100/(50+100) = 33% 100 | 1 - 100/(100+100) = 50% 200 | 1 - 100/(200+100) = 66% 300 | 1 - 100/(300+100) = 75% 400 | 1 - 100/(400+100) = 80% +100 will cut off the bottom 50% of the Y tag's affixes, +200 will cut off the bottom 66% of the Y tag's affixes, and so on. The weight of the reduced affix will become 0. ## Y Modifiers are X% scarcer `Y Modifiers are X% scarcer` (Modifiers that are 100% scarcer have weighting halved), formula `100/(X + 100)` X | scale - | - 100 | 100/(100+100) = 50% 300 | 100/(300+100) = 25%