Breath of Life

Trample, lifelink, plainswalk, forestwalk
Whenever you gain life, you may pay {g}{g}{w}. If you do, put a 5/5 white and green Elemental token onto the battlefield.
{t}: Add {g} or {w} to your mana pool equal to the amount of life you gained during this turn.
Zendikar is always angry, but even its anger can turn into benevolence.