Knight of the Reliquary is a rare Creature — Human Knight card from Iconic Masters (IMA), collector number 203. Current market price: $1.36 (foil $4.89), TCGplayer market prices via Scryfall.
This creature gets +1/+1 for each land card in your graveyard. {T}, Sacrifice a Forest or Plains: Search your library for a land card, put it onto the battlefield, then shuffle.