Abzan Monument is a uncommon Artifact card from Tarkir: Dragonstorm (TDM), collector number 238. Current market price: $0.21 (foil $0.31), TCGplayer market prices via Scryfall.
When this artifact enters, search your library for a basic Plains, Swamp, or Forest card, reveal it, put it into your hand, then shuffle. {1}{W}{B}{G}, {T}, Sacrifice this artifact: Create an X/X white Spirit creature token, where X is the greatest toughness among creatures you control. Activate only as a sorcery.