Jeskai Monument is a uncommon Artifact card from Tarkir: Dragonstorm (TDM), collector number 244. Current market price: $0.15 (foil $0.23), TCGplayer market prices via Scryfall.
When this artifact enters, search your library for a basic Island, Mountain, or Plains card, reveal it, put it into your hand, then shuffle. {1}{U}{R}{W}, {T}, Sacrifice this artifact: Create two 1/1 white Bird creature tokens with flying. Activate only as a sorcery.