Mark Of Cain

Enchant a creture that has killed 5 creatures this game or if it's named Cain or Dean Winchester
Enchanted creature gains +1/+1 and gains 10 Mental tokens
Every time this creature kills a creature, remove a Mental token
When this creature has 0 Mental tokens left or dies, the creature gets +2/+2, and becomes a Knight of Hell, along with all abilities that the card named Knight Of Hell has, Resurrect it
This enchantment cannot be destroyed