You may choose not to untap The Blackstaff of Waterdeep during your untap step.
Animate Walking Statue —
![1](/Handlers/Image.ashx?size=small&name=1&type=symbol)
![Blue](/Handlers/Image.ashx?size=small&name=U&type=symbol)
,
![Tap](/Handlers/Image.ashx?size=small&name=tap&type=symbol)
: 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.