Chain of Acid, and Archmage Emeritus

Prerequisites

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

Steps

1. Cast Chain of Acid by paying , targeting any indestructible noncreature permanent you control
2. Archmage Emeritus triggers, causing you to draw a card
3. Resolve Chain of Acid, failing to destroy the indestructible permanent and choosing to copy Chain of Acid, targeting the indestructible permanent with the copy
4. Repeat from step 2

Results

• Infinite card draw
• Infinite draw triggers
• Near-infinite magecraft triggers