Erdtree Avatar

When Erdtree Avatar enters the battlefield, draw a card.

Landfall—Whenever a land you control enters, you gain 4 life if this is the first time this ability has resolved this turn. If it's the second time, add {w}{u}{r}{g}. If it's the third time, Erdtree Avatar deals 4 damage to each opponent and each planeswalker you don't control.