How it works
Prerequisites
- You control an indestructible noncreature permanent.
Steps
- 1Cast Chain of Acid by paying , targeting any indestructible noncreature permanent you control.
- 2Archmage Emeritus triggers, causing you to draw a card.
- 3Resolve Chain of Acid, failing to destroy the indestructible permanent and choosing to copy Chain of Acid, targeting the indestructible permanent with the copy.
- 4Repeat from step 2.
Commander brackets
In which brackets is this combo allowed, per Spellbook's Spicy tier?
Spellbook classifies this as Spicy — not for these brackets.