Radha, Heart of Keld is a rare Legendary Creature — Elf Warrior card from Core Set 2021 Promos (PM21), collector number 224p. Current market price: $0.90 (foil $2.06), TCGplayer market prices via Scryfall.
During your turn, Radha has first strike. You may look at the top card of your library any time, and you may play lands from the top of your library. {4}{R}{G}: Radha gets +X/+X until end of turn, where X is the number of lands you control.