Dual Strike, and Increasing Vengeance

Prerequisites

• Dual Strike in hand or in exile
• Increasing Vengeance in hand or in the graveyard
• You have an additional instant and/or sorcery card in hand
• , plus an additional if Dual Strike was not foretold, plus enough mana to cast the additional instant or sorcery available

Steps

1. Cast any other instant and/or sorcery spell by paying its mana cost
2. Holding priority, cast Dual Strike by paying , copying the next instant or sorcery spell you cast with mana value 4 or less
3. Cast Increasing Vengeance by paying , targeting the instant or sorcery spell cast in step 1
4. Dual Strike triggers, copying Increasing Vengeance, with the copy targeting the original Increasing Vengeance
5. Resolve the copy of Increasing Vengeance, copying Increasing Vengeance, with the copy targeting the original Increasing Vengeance
6. Repeat step 5

Results

• Infinite magecraft triggers