Kentaro, the Smiling Cat, Shrieking Drake, Urza's Incubator, and Leyline of Transformation

Prerequisites

• Kentaro, the Smiling Cat on the battlefield
• Shrieking Drake in hand
• Urza's Incubator on the battlefield
• Leyline of Transformation on the battlefield

Steps

1. Cast Shrieking Drake by paying
2. When Shrieking Drake enters the battlefield, it triggers, returning itself from the battlefield to your hand
3. Repeat

Results

• Infinite LTB
• Infinite ETB
• Infinite storm count