Lathliss, Dragon Queen, Slumbering Dragon, Cloudstone Curio, and Birgi, God of Storytelling // Harnfel, Horn of Bounty

Prerequisites

• Lathliss, Dragon Queen on the battlefield
• Slumbering Dragon in hand
• Cloudstone Curio on the battlefield
• Birgi, God of Storytelling // Harnfel, Horn of Bounty on the battlefield
• available

Steps

1. Cast Slumbering Dragon by paying
2. Birgi triggers, adding
3. Slumbering Dragon enters the battlefield, triggering Cloudstone Curio and Lathliss
4. Resolve the Cloudstone Curio trigger, choosing not to return anything to your hand from the battlefield
5. Resolve the Lathliss trigger, creating a 5/5 Dragon creature token
6. The Dragon enters the battlefield, triggering Cloudstone Curio, returning Slumbering Dragon from the battlefield to your hand
7. Repeat

Results

• Infinite creature tokens
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers
• Infinite storm count