Knight of the Reliquary is a special Creature — Human Knight card from Time Spiral Remastered (TSR), collector number 379. Current market price: $1.92 (foil $24.54), 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.