Ono, Meandering Druid

Swampwalk, Indestructible, Trample
{t}: Add {g}{g}.
{3}{g}: Exile target permanent opponent controls.
Whenever Ono, Meandering Druid untaps you
may create three 1/1 green saproling tokens.
At the beginning of your upkeep, you gain life
equal to the number of saprolings you control.