Scroll of the Masters is a rare Artifact card from Fate Reforged (FRF), collector number 163. Current market price: $0.20 (foil $0.70), TCGplayer market prices via Scryfall.
Whenever you cast a noncreature spell, put a lore counter on this artifact. {3}, {T}: Target creature you control gets +1/+1 until end of turn for each lore counter on this artifact.