The Blackstaff of Waterdeep is a rare Legendary Artifact card from Adventures in the Forgotten Realms Promos (PAFR), collector number 48p. Current market price: $0.35 (foil $0.40), TCGplayer market prices via Scryfall.
You may choose not to untap The Blackstaff of Waterdeep during your untap step. Animate Walking Statue — {1}{U}, {T}: Another target nontoken artifact you control becomes a 4/4 artifact creature for as long as The Blackstaff of Waterdeep remains tapped. Activate only as a sorcery.
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