How it works
Prerequisites
- You have a nonartifact black creature card in hand with mana value two or less.
Steps
- 1Cast Priest of Gix by discarding another nonartifact black creature card with mana value two or less.
- 2Containment Construct triggers, causing you to exile the discarded card from your graveyard and allowing you to cast it this turn.
- 3Priest of Gix enters the battlefield, triggering itself and Cloudstone Curio.
- 4Resolve the Priest of Gix trigger, adding .
- 5Holding priority, cast the black creature from exile by paying its mana cost.
- 6The creature enters the battlefield, triggering Cloudstone Curio, returning Priest of Gix from the battlefield to your hand.
- 7Resolve the Cloudstone Curio trigger from step 3, returning the black creature to your hand.
- 8Repeat.
Commander brackets
In which brackets is this combo allowed, per Spellbook's Exhibition tier?