League Guildmage

The controller of a copy can't choose to pay any alternative or additional costs for the copy. However, effects based on any alternative or additional costs that were paid for the original spell are copied as though those same costs were paid for the copy.

League Guildmage's second ability can copy any instant or sorcery spell you control, not just one with targets.

If you copy a spell, you control the copy. It will resolve before the original spell does.