Narset's Reversal, and Increasing Vengeance

Prerequisites

• Narset's Reversal in hand
• Increasing Vengeance in hand
• plus enough mana to cast the additional instant or sorcery available

Steps

1. Cast any instant or sorcery by paying its mana cost
2. Holding priority, cast Increasing Vengeance by paying its mana cost, targeting the instant or sorcery cast in step 1
3. Cast Narset's Reversal by paying , copying Increasing Vengeance targeting the spell cast in step 1 and returning the original Increasing Vengeance to your hand
4. Cast Increasing Vengeance by paying its mana cost, copying the copy of Increasing Vengeance, targeting the copy of Increasing Vengeance
5. Resolve the copy of Increasing Vengeance, creating a copy of Increasing Vengeance targeting the copy of Increasing Vengeance
6. Repeat step 5

Results

• Infinite magecraft triggers