Professor Onyx, and Chain of Smog

Prerequisites

• Professor Onyx on the battlefield
• Chain of Smog in hand
• available

Steps

1. Cast Chain of Smog by paying , targeting yourself
2. Professor Onyx triggers, causing each opponent to lose 2 life and you to gain 2 life
3. Resolve Chain of Smog, discarding two cards if possible, then copying the spell without choosing a new target
4. Repeat from step 2

Results

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