Styx, Master of Puppets

Indestructable, Deathtouch, Trample, Lifelink
At the start of each combat, Styx, Master of
Puppets deal X damage to each opponent, where
X is equal to the highest converted mana cost
among permanents he/she controls.
Whenever you gain life, create X 2/2 Zombie
creature tokens where X is equal to the amount
of life gained.