Gaea's Will is a rare Sorcery card from Modern Horizons 2 (MH2), collector number 412. Current market price: $0.34 (foil $0.38), TCGplayer market prices via Scryfall.
Suspend 4—{G} Until end of turn, you may play lands and cast spells from your graveyard. If a card would be put into your graveyard from anywhere this turn, exile that card instead.