Spirit Flare

Instant, 3W (4)
Tap target untapped creature you control. If you do, it deals damage equal to its power to target attacking or blocking creature an opponent controls.
Flashback-{1}{W}, Pay 3 life. (You may cast this card from your graveyard for its flashback cost. Then exile it.)¹
Illus. rk post

Gatherer Card Rulings [Nov 2009]

• 10/4/2004: If either target is illegal when the spell resolves, it will do no damage.

Format Legality	Legal in Vintage, Legacy Banned in Extended, Standard
Printings (1/6)	Torment (Common)