Izzet Locket is a common Artifact card from Guilds of Ravnica (GRN), collector number 238. Current market price: $0.15 (foil $0.68), TCGplayer market prices via Scryfall.
{T}: Add {U} or {R}. {U/R}{U/R}{U/R}{U/R}, {T}, Sacrifice this artifact: Draw two cards.