Showdowns and the Chain
May I change just one target while keeping another illegal target?
New choices remake the whole eligible set
RiftPal explanation · Answer first
Actually
When you use a new-choice permission, remake every eligible choice. All resulting choices must be legal; you may select a previously chosen option again if it is still legal.
RiftPal explanation
Why it matters
Radiance replaces the earlier interim model. An optional permission may be declined. If you use it, all eligible TargetA specific object, player or zone chosen by a spell or ability under the targeting rules. Check legality when choosing and when resolving. Costs, automatic groups and explicit "pick" choices do not target; pending Chain items cannot be targeted.View in Glossary s, modes and locations must form a legal set. Targeting abilities can trigger again even for the same target. This does not reopen optional additional costs.
In practice
At the table
Your spell targets A and B. A becomes illegal, while B remains legal. An effect lets you make new choices. Choose legal C instead of A and choose B again: both target choices have been remade. You may reuse B because it is still legal; you cannot reuse A.