Prerequisites
- Twincast in hand
- Fork in hand
- You have a way to cast an additional instant or sorcery, or an opponent is casting one
- , plus enough mana to cast the additional spell if needed available
Steps
- Cast any instant or sorcery spell, or wait for an opponent to cast one
- Holding priority, cast Fork by paying , targeting that spell
- Cast Twincast by paying , copying Fork, with the copy targeting Fork
- Resolve the copy of Fork, copying the original Fork, with the copy targeting the original Fork
- Repeat step 4