巫视望远镜 (Sorcerous Spyglass) (zhs)
Artifact
(CMC 2)
As Sorcerous Spyglass enters the battlefield, look at an opponent's hand, then choose any card name.
Activated abilities of sources with the chosen name can't be activated unless they're mana abilities.
- [LCI] Lost Caverns of Ixalan #261 (U)