Fury Storm, and Professor Onyx

Prerequisites

• Fury Storm in hand
• Professor Onyx on the battlefield
• undefined available

Steps

1. Cast your additional instant or sorcery spell, or wait for an opponent to cast one
2. Professor Onyx triggers, losing each opponent two life and gaining you 2 life
3. Cast Fury Storm targeting the instant or sorcery spell
4. Professor Onyx triggers, losing each opponent two life and gaining you 2 life
5. Fury Storm triggers, copying itself for each time you have cast your commander from your command zone this game and choosing the original copy of Fury Storm as the target
6. Professor Onyx triggers for each copy, losing each opponent two life and gaining you 2 life each time
7. Resolve a Fury Storm copy, copying Fury Storm and choosing the original Fury Storm as the target
8. Professor Onyx triggers, losing each opponent two life and gaining you 2 life
9. Repeat from step 7

Results

• Infinite lifegain
• Infinite lifegain triggers
• Infinite lifeloss
• Infinite magecraft triggers