Chain of Acid, and Witherbloom Pledgemage

Prerequisites

• Chain of Acid in hand
• Witherbloom Pledgemage on the battlefield
• You control an indestructible noncreature permanent
• available

Steps

1. Cast Chain of Acid by paying , targeting an indestructible noncreature permanent you control
2. Witherbloom Pledgemage triggers, causing you to gain 1 life
3. Resolve Chain of Acid, destroying nothing and causing you to copy Chain of Acid, targeting an indestructible noncreature permanent you control
4. Repeat from step 2

Results

• Infinite lifegain
• Infinite lifegain triggers
• Infinite magecraft triggers