Elsfrid, Duality

Flying, deathtouch, lifelink

Elsfrid, Duality's base power is equal to your total life lost this turn.

Whenever you gain life, you may put a +1/+1 counter on Elsfrid, Duality. If you do, you lose
X life, where X is Elsfrid, Duality's power.

"and still, they wanted more."