Corro, Intune with Nature

Lifelink.
Whenever you gain life, you may pay {1}.
If the mana paid this way was green, summon
two 1/1 green Saproling creature tokens.
If the mana paid this way was white, put two +0/+1 counters on target creature.
If the mana paid this way was not green or white, this creature gains +0/+2 until end of turn.