Rule 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…
• 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…

Official Core Rules