Instant, 2RR (4)
Rare
You may choose new targets for target instant or sorcery spell. Then copy that spell. You may choose new targets for the copy.
"I knew that trick long before your great-grandmother's great-grandmother was born."
Illus. Dan Scott

10/1/2007: You copy the spell whether you choose new targets for it or not.
10/1/2007: The targeted spell's controller retains control of that spell. You control the copy.
10/1/2007: You may change any of the targeted spell's targets, or any of the copy's targets. If you change a target, you must choose a legal target for the spell. If you can't, you must leave the target the same (even if that target is now illegal).
Legal in Vintage (Type 1)
Legal in Legacy (Type 1.5)
Legal in Classic (MTGO)
Legal in Commander
Legal in Modern