Preston, the Vanisher, Karmic Guide, and Clone

Prerequisites

• Preston, the Vanisher on the battlefield
• Karmic Guide in hand
• Clone in the graveyard
• available

Steps

1. Cast Karmic Guide by paying
2. When Karmic Guide enters the battlefield, it triggers, returning Clone to the battlefield from your graveyard
3. Choose not to have Clone copy anything as it enters the battlefield
4. Clone dies as a state-based action due to having zero toughness
5. Preston triggers, creating a copy of Clone that is a 0/1 Illusion
6. Choose to have the Clone token enter the battlefield as a copy of Karmic Guide
7. When the Clone token enters the battlefield, it triggers, returning the nontoken Clone to the battlefield from your graveyard
8. Repeat from step 3

Results

• Infinite creature tokens
• Infinite death triggers
• Infinite ETB
• Infinite LTB