When do spells go to the trash - immediately when played or after they resolve?

Ruling: Spells go to the trash after they resolve, not immediately when played.

Sequence:

• When a spell is played, it enters a temporal zone called the Chain
• The spell remains in the Chain zone until it resolves
• After resolution, the spell moves to the trash

Nuances:

• This matters for effects that count cards in trash or return cards from trash to hand
• For example, Convergent Mutation is not in the trash when it resolves, so it doesn't count toward its own Might bonus calculation