Life's Balance

When Life's Balance enters the battlefield
choose target player.
Whenever one of you gains life, the other one
looses that much. Whenever one of you looses
life, the other one gains that much life.
Life loss and gain that are caused from a
trigger from this card, can't trigger this effect.
"Life can't be created nor destroyed. After all, I'm
here to keep an eye on the scales."
Nature's Spirit