Blessed Sanctuary, Cloudstone Curio, and Ornithopter

Prerequisites

• Blessed Sanctuary on the battlefield
• Cloudstone Curio on the battlefield
• Ornithopter in hand

Steps

1. Cast Ornithopter by paying
2. Ornithopter enters the battlefield, triggering Blessed Sanctuary, creating a 2/2 Unicron creature token
3. The Unicorn enters the battlefield, triggering Cloudstone Curio, returning Ornithopter from the battlefield to your hand
4. Repeat

Results

• Infinite creature tokens
• Infinite ETB
• Infinite LTB
• Infinite storm count