In Riftbound, are targets declared on cast or chosen on resolution, and what happens if a target becomes illegal before resolution?

Ruling: Targets are declared on cast. If targets become illegal before resolution (e.g., due to a reactive buff spell), you choose a valid subset of the original targets and resolve with those.

Sequence:

• Declare targets when casting the spell
• If target legality changes before resolution, select a valid subset from the originally declared targets
• Resolve the spell with the valid targets

Nuances:

• Riftbound uses a "do as much as you can" system alongside legal targeting
• Cards like Foxfire (which can target multiple units) are still being refined by developers for exact targeting processes when legality changes