Deepwood Nurturer

Whenever a land taps for mana that it couldn't originally produce, you gain 1 life.
{g}, {t}: Place a waste, bog, or moss counter on target land (Lands with waste counters are Plains, lands with bog counters are Swamps, and lands with moss counters are Forests.).

Tend to your own or be tended to.
-Deepwoods Saying