The ability to possess an Entity(Creature/NPC/Player), If the Entity has a smaller Constitution than "The Wraith" than it is possessed Instantly if the Entity has a Constitution Greater than or equal to "The Wraith", Both must must roll for Constitution, If "The Wraith" Succeeds it can now Control the Entity (All actions are based on the Entity's Stats not "The Wraith's). "the Wraith" Rolls Lower than the Entity, it fails and is forced to do a Dexterity Saving Roll. Entities(other than the target of possession)can use "bless" this will force the wraith to do a constitution save against the blessing

(Has ABOSOLUTLY NO effect on Druids, Cleric's, Paladins, or Any Celestial Race)