Khorne, the Blood God

Indestructible

Khorne, the Blood God's power and toughness
are equal to the total number of creatures that
attacked or blocked last turn.

Noncreature spells also cost X life, where X is
equal to that spell's converted mana cost. (i.e.
1 mana cost spells also costs 1 life.)

Only bloodletting will satisfy him