Knight of the Reliquary is a mythic Creature — Human Knight card from Duel Decks: Knights vs. Dragons (DDG), collector number 1. Current market price: — (foil $3.01), 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.