Rootha, Mercurial Artist, and Increasing Vengeance

Prerequisites

• Rootha, Mercurial Artist on the battlefield
• Increasing Vengeance in hand
• You have an additional instant and/or sorcery card in hand
• , plus enough mana to cast the additional instant or sorcery available

Steps

1. Cast an instant or sorcery spell, or wait for an opponent to cast one
2. Holding priority, cast Increasing Vengeance by paying , targeting the spell
3. Activate Rootha by paying and returning it to your hand, copying Increasing Vengeance, with the copy targeting the original Increasing Vengeance
4. Resolve the copy of Increasing Vengeance, copying Increasing Vengeance, targeting the original Increasing Vengeance
5. Repeat step 4

Results

• Infinite magecraft triggers