Sedgemoor Witch, and Chain of Acid

Prerequisites

• Sedgemoor Witch on the battlefield
• Chain of Acid in hand
• You control an indestructible non-creature permanent
• available

Steps

1. Cast Chain of Acid by paying , targeting any indestructible non-creature permanent you control
2. Sedgemoor Witch triggers, causing you to create a 1/1 Pest creature token
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 creature tokens
• Infinite ETB
• Infinite magecraft triggers