Magewright's Stone

Oracle Text

1, T: Untap target creature that has an activated ability with T in its cost.

Card Rulings

5/1/2006 If an activated ability with in its cost is granted to a creature by an effect (such as Hypervolt Grasp’s effect, for instance), Magewright’s Stone can untap that creature.
5/1/2006 This looks for the symbol. The phrase “tap an untapped creature you control” isn’t the same and doesn’t count.