Erisidur of the Old Pines

Flying
At the beginning of your end step create two
0/1 green plant creatures.
Whenever a plant creature you control enters or
leaves the battlefield you gain 1 life.
{u}, Tap two creatures you control: Tap target creature an opponent controls.
{b}, Sacrifice a plant creature: Gain 1 life.
{g}, Sacrifice two plant creatures: Put a basic land
onto the battlefield tapped.