Evekh, Torturing Wraith

Possess {w/b}{w/b}{w/b} (You may cast this spell as an Aura enchantment with "Enchant permanent you don't control" for its possess cost.)
Flying, lifelink
Enchanted permanent gets -2/-2 as long as it's a creature and has "Whenever this permanent becomes tapped, it deals 3 damage to its controller."