I'm pretty sure I already know the answer to this one, but this is a "just in case" thing.
Willful
R: Before you fail a control check that was modified by your opponent, that check is successful instead. Discard this card from your card pool and draw 1 card.
Here's the scenario.
Player A's character has the All, Fire, and Order resource symbols (Astrid, let's say). Player A attempts to play a card whose symbols are All/Chaos/Void (Card 1). The card is revealed in the hand, etc. Player B responds with a check modifier (BRT, let's say) that results in what will be a failed check.
Is it possible for Player A to then respond with Willful, as, assuming they pass the check and the ability isn't negated, while it doesn't match a symbol with Card 1, after being played and it is resolving, it discards itself from the card pool prior to Card 1 being placed in the card pool?
Or, more likely the correct answer, it is possible to respond with Willful because Card 1 is not in the card pool when Willful is attempted, and cards only must meet the resource restriction before a control check is made, not during the entire "attempting to play" process (i.e., Transitional Zone)?