Chain of Acid + Professor Onyx
Chain of Acid
Chain of Acid must be in hand. Professor Onyx must be on the battlefield. You control an indestructible noncreature permanent. Mana needed:
- Cast Chain of Acid for targeting an indestructible noncreature permanent you control.
- Professor Onyx triggers, causing each opponent to lose 2 life and you to gain 2 life.
- Resolve Chain of Acid, failing to destroy the target and copying Chain of Acid targeting the same permanent.
- Repeat from step 2.
Infinite lifegain. Infinite lifegain triggers. Infinite lifeloss. Infinite magecraft triggers.