Hollia the Tree Guardian

Sacrifice a forest: Create a green 4/4 Elemental creature token with Trample and Haste.
Sacrifice a plains: Create a white 4/4 Elemental creature token with Vigilance and Haste.
Sacrifice an elemental, Pick one:
- Create a Forest land token.
- Create a Plains land token.
You can do this only up to three times per turn.