Rockalanche is a uncommon Sorcery — Lesson card from Avatar: The Last Airbender (TLA), collector number 192. Current market price: $0.31 (foil $0.34), TCGplayer market prices via Scryfall.
Earthbend X, where X is the number of Forests you control. (Target land you control becomes a 0/0 creature with haste that's still a land. Put X +1/+1 counters on it. When it dies or is exiled, return it to the battlefield tapped.) Flashback {5}{G} (You may cast this card from your graveyard for its flashback cost. Then exile it.)