753. When making new choices in this way, a player can choose any subset of the possible choices to remake, so long as doing so doesn't lead to an illegal state.
753.1. A player may not make new choices this way that would be illegal or that would lead to an illegal state, even if there are no other options.
753.2. A player may not choose to make new choices for a spell or ability if there aren't legal choices that they could make in this way.