Prerequisites
- Twincast in hand
- Reverberate in hand
available
Steps
- Cast any instant or sorcery spell, or wait for an opponent to cast one
- Holding priority, cast Reverberate by paying
, targeting that spell
- Cast Twincast by paying
, copying Reverberate, with the copy targeting Reverberate
- Resolve the copy of Reverberate, copying the original Reverberate, with the copy targeting the original Reverberate
- Repeat step 4