Rotting Leviathan

Rotting Leviathan costs {1} less for each zombie
in you graveyard.
Hexproof
{1}{u} Scavenge - Scry 1 and draw a card
{1}{b}{b} Consume - Destroy target creature
A gargantuan, annihilative force of nature, unnaturally brought back from death to wreak yet more death.