Elvish Reclaimer is a rare Creature — Elf Warrior card from Core Set 2020 (M20), collector number 169. Current market price: $4.12 (foil $10.37), TCGplayer market prices via Scryfall.
This creature gets +2/+2 as long as there are three or more land cards in your graveyard. {2}, {T}, Sacrifice a land: Search your library for a land card, put it onto the battlefield tapped, then shuffle.