If an opponent Defys a spell with Repeat, can you still pay the Repeat cost to cast it again?

Question

Accepted Answer

Ruling: No, you cannot pay the Repeat cost after a spell is Defied. Repeat is an additional cost that must be paid before the spell is finalized onto the chain.

Sequence:
- Declare you are casting the spell
- Decide whether to pay the Repeat cost
- Finalize the spell onto the chain
- Opponent can then Defy the spell

Nuances:
- If you pay Repeat, the spell counts as one spell with a bigger effect box doing the same thing twice, and can still be Defied as a single spell