What new choices can I make when I play Rebuttal and pay [A]?

You can choose any number of targets or modes to make new choices for. The rest remain the same.

If you are remaking choices in this way, any choices you choose not to remake must be legal choices. You can’t choose to have some but not all choices be legal choices. Of course, you can always choose not to make new choices. In that case, any of the current choices will remain in their current state, whether that state is illegal or not.

If a spell has some rules or requirements about the choices made for it, those apply regardless of who controls that spell. For example, if a player plays a spell from face down, they must target game objects located at the battlefield the spell was played from unless the instructions of that spell indicate that a target must be chosen from some other location. Gaining control of such a spell doesn’t change this requirement when making new choices for the spell.

This section is expected to be revisited in a future rules update.