Panoptic Mirror, and Alrund's Epiphany

Prerequisites

• Panoptic Mirror on the battlefield
• Alrund's Epiphany in exile
• undefined

Steps

1. At the beginning of your upkeep, Panoptic Mirror triggers, casting a copy of Alrund's Epiphany without paying its mana cost
2. Resolve Alrund's Epiphany, causing you to take an extra turn after this one
3. Repeat each turn

Results

• Infinite turns