For Foxfire, do you choose targets when the card goes on the chain or on resolution?

Ruling: You declare targets when the spell goes on the chain. The targets must meet the condition (total might 4 or less) at that time, and those targets are locked in.

Sequence:

• When you play Foxfire, choose units whose total might is 4 or less
• These targets are set and must meet the condition at this time
• When the spell resolves, check the targets again and do as much as possible
• At resolution, you confirm from within the original group which targets you are dealing damage to and how you divide that damage

Nuances:

• You specify the maximum possible targets when finalizing, creating "the group"
• At resolution, you can only shrink the group to conform to the game state, never expand it
• If targets were pumped after being chosen, you still only affect the originally targeted units (doing as much as possible)
• You cannot target units that don't meet the condition initially, even if you plan to reduce their might on the chain