Azorius Locket is a common Artifact card from Ravnica Allegiance (RNA), collector number 231. Current market price: $0.26 (foil $0.50), TCGplayer market prices via Scryfall.
{T}: Add {W} or {U}. {W/U}{W/U}{W/U}{W/U}, {T}, Sacrifice this artifact: Draw two cards.