Kentaro, the Smiling Cat, Whitemane Lion, Urza's Incubator, and Conspiracy

Prerequisites

• Kentaro, the Smiling Cat on the battlefield
• Whitemane Lion in hand
• Urza's Incubator on the battlefield
• Conspiracy on the battlefield
• "Samurai" chosen with Urza's Incubator and Conspiracy

Steps

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

Results

• Infinite ETB
• Infinite LTB
• Infinite storm count