How it works
Steps
- 1Cast Mothdust Changeling by paying .
- 2Mothdust Changeling enters the battlefield, triggering Cloudstone Curio and Miirym.
- 3Resolve the Cloudstone Curio trigger, choosing not to return anything to your hand from the battlefield.
- 4Resolve the Miirym trigger, creating a token copy of Mothdust Changeling.
- 5The Mothdust Changeling token enters the battlefield, triggering Cloudstone Curio, returning the nontoken Mothdust Changeling from the battlefield to your hand.
- 6Activate Phyrexian Altar by sacrificing the Mothdust Changeling token, adding .
- 7Repeat.
Commander brackets
In which brackets is this combo allowed, per Spellbook's Exhibition tier?