Wendigo

Trample
Whenever Wendigo deals combat damage to a player, that player sacrifices a creature.
Whenever a player sacrifices a creature, you gain life equal to that creature's toughness.
{1}{b}{g}: Regenerate Wendigo
In the heart of the frozen wilderness, where the wind howls like a mournful dirge, the Wendigo stalks its prey, feeding on both flesh and soul.