Backlash

Instant, 1BR (3)
Tap target untapped creature. That creature deals damage equal to its power to its controller.
Darigaaz decided his foe would be more useful as a weapon.
Illus. Chippy

Gatherer Card Rulings [Nov 2009]

• 10/4/2004: Being untapped is a targeting restriction. If the target is tapped before this spell resolves, then this spell is countered.

Format Legality	Legal in Vintage, Legacy, MTGO Classic Banned in Extended, Standard
Printings (1/6)	Invasion (Uncommon)