Does Vex affect opponent's Repeat spell costs?

Ruling: No, Vex does not affect Repeat costs. Vex's ability increases the base cost of enemy spells, but Repeat is an optional additional cost that is separate from the base spell cost and is not affected by Vex.

Sequence:

• Vex is in play with its ability active

• An opponent plays a spell with Repeat

• Vex increases only the base cost of that spell

• The Repeat cost remains unchanged and is paid separately

  Nuances:

• Repeat is treated as an optional additional cost, not part of the base spell cost

• When determining if Defy can counter a repeated spell, check if the base cost is within Defy's limits

• A spell with Repeat is still treated as a single spell for targeting and resolution purposes