Forsaken Monument is a mythic Legendary Artifact card from Zendikar Rising Promos (PZNR), collector number 244p. Current market price: $6.41 (foil $7.08), TCGplayer market prices via Scryfall.
Colorless creatures you control get +2/+2. Whenever you tap a permanent for {C}, add an additional {C}. Whenever you cast a colorless spell, you gain 2 life.