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

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