Toph Beifong, Unbreakable

When Toph Beifong, Unbreakble enters, you may
put a land card from your hand onto the battlefield.

Landfall — Whenever a land enters under your control, create a 1/1 green Elemental creature token
if this is the first time this ability has resolved this turn. If it's the second time, add {g}{g}{g}. If it's the third time, Toph deals X damage to any target, where X is the number of Elemental creatures you control.