How it works
Prerequisites
- You control a nontoken creature with morph or megamorph.
- You have a creature card with morph or megamorph in your hand.
Steps
- 1Cast the creature card with morph or megamorph from your hand for its morph cost by paying .
- 2Whenever the face-down creature enters the battlefield, Cloudstone Curio triggers, returning another creature with morph or megamorph to your hand from the battlefield.
- 3Repeat.
Commander brackets
In which brackets is this combo allowed, per Spellbook's Exhibition tier?