Priest of Urabrask + Containment Construct + Dream Halls + Cloudstone Curio + Teferi, Mage of Zhalfir

Prerequisites

• You have a nonartifact red creature card in hand with mana value two or less.

Steps

1. 1Cast Priest of Urabrask by discarding another nonartifact red creature card with mana value two or less.
2. 2Containment Construct triggers, causing you to exile the discarded card from your graveyard and allowing you to cast it this turn.
3. 3Priest of Urabrask enters the battlefield, triggering itself and Cloudstone Curio.
4. 4Resolve the Priest of Urabrask trigger, adding .
5. 5Holding priority, cast the red creature from exile by paying its mana cost.
6. 6The creature enters the battlefield, triggering Cloudstone Curio, returning Priest of Urabrask from the battlefield to your hand.
7. 7Resolve the Cloudstone Curio trigger from step 3, returning the red creature to your hand.
8. 8Repeat.

Effects

• Infinite creature ETB
• Infinite creature LTB
• Infinite red mana
• Infinite storm count