Wakeroot Elemental is a rare Creature — Elemental card from Core Set 2020 Promos (PM20), collector number 202p. Current market price: $0.50 (foil $0.80), TCGplayer market prices via Scryfall.
{G}{G}{G}{G}{G}: Untap target land you control. It becomes a 5/5 Elemental creature with haste. It's still a land. (This effect lasts as long as that land remains on the battlefield.)