Force of Instinct

You may pay 1 life and exile a green card from your hand rather than pay this spell's mana cost.
Target creature you control gets +1/+1 until end of turn. It fights target creature an opponent controls.
"I awoke to a broken world teeming with life despite its tragedies. Yavimaya will bloom again, and the might of nature shall be forgotten no more."
--Multani, Yavimaya's Avatar