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

Kentaro, the Smiling Cat

Whitemane Lion

Urza's Incubator

Conspiracy

How it works

1. Cast Whitemane Lion by paying 0.
2. When Whitemane Lion enters the battlefield, it triggers, returning itself from the battlefield to your hand.
3. Repeat.

This intricate loop relies on transforming Whitemane Lion into a Samurai through Conspiracy, allowing you to bypass its mana cost entirely using Kentaro, the Smiling Cat's alternative payment ability. Urza's Incubator steps in to further grease the wheels by reducing that cost by {2}, bringing the casting price down to a neat zero. Once Whitemane Lion hits the battlefield, its own entry trigger forces it right back to your hand, enabling an endless cycle of self-bouncing that generates infinite creature enters-the-battlefield and leaves-the-battlefield triggers alongside an astronomical storm count.