Ancient Sangromancer

Awaken 4 - {2}{b}{r}{c} (If you cast this spell for {2}{b}{r}{c}, also put four +1/+1 counters on target land you control and it becomes a 0/0 elemental creature with haste that's still a land.)
Whenever you sacrifice a creature, you gain two life.
When Ancient Sangromancer dies, you lose X life, where X is the total power of all land creatures you control.