Preston, the Vanisher, Karmic Guide, and Glasspool Mimic // Glasspool Shore

Prerequisites

• Preston, the Vanisher on the battlefield
• Karmic Guide in hand
• Glasspool Mimic // Glasspool Shore in the graveyard
• available

Steps

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

Results

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