# Lone Messenger **Lone Messenger** is a [Keystone ](https://poedb.tw/us/Keystone) [[passive skill]] that significantly improves herald at the cost of disabling the character's auras and have a maximum of one herald. It increase the damage from the minions from [[Herald of Agony]] and [[Herald of Purity]], or the explosion hit from [[Herald of Ice]] and lightning bolts from [[Herald of Thunder]], or the damage over time from [[Herald of Ash]] and the ailment damage over time from hits of Herald. Note that Herald of Thunder's hit cannot inflict shock, while shock, freeze and chill (as well as the alternative ailments: scorch, brittle, and sap) are non-damage ailments. Only bleed, poison, and ignite are damaging ailments, which Lone Messenger only scale their damage if it is inflicted by the Herald. It can only appear when placing [[cluster jewel]]s into the player character's skill tree.