D'rek, Worm of Autumn

Indestructible
Sacrifice a creature: Add {x}{b}{g} to your mana
pool where X is the sacrificed creature's
toughness. As long as your devotion to green
and black is less than seven, D'rek Worm of
Autumn isn't a creature.
"the power they demanded was the power of blood.
Well, she decided, if they so lusted for blood. she would
give them all they wanted. All they wanted."
-Banaschar