Expansion // Explosion + Twincast

Prerequisites

• You have a way to cast an additional instant or sorcery, or an opponent is casting one.

Steps

1. 1Cast any other instant and/or sorcery spell, or wait for an opponent to cast one.
2. 2Holding priority, cast Expansion by paying , copying the next instant or sorcery spell you cast with mana value four or less.
3. 3Cast Twincast by paying , targeting the instant or sorcery spell cast in step 1.
4. 4The delayed trigger from Expansion triggers, copying Twincast, with the copy targeting the original Twincast.
5. 5Resolve the copy of Twincast, copying Twincast, with the copy targeting the original Twincast.
6. 6Repeat step 5.

Effects

• Infinite magecraft triggers