Sedgemoor Witch + Chain of Acid

Sedgemoor Witch
Chain of Acid

Sedgemoor Witch must be on the battlefield. Chain of Acid must be in hand. You control an indestructible non-creature permanent. Mana needed: 3g
  1. Cast Chain of Acid by paying 3g, 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.
Infinite creature tokens. Infinite ETB. Infinite magecraft triggers.