Saheeli, Sublime Artificer, Venser, the Sojourner, Mirror of Fate, and Alrund's Epiphany

Prerequisites

• Saheeli, Sublime Artificer on the battlefield
• Venser, the Sojourner on the battlefield
• Mirror of Fate on the battlefield
• Alrund's Epiphany in hand or in exile
• Saheeli has at least three loyalty counters
• fewer mana required on the first turn if Alrund's Epiphany was foretold
• each turn available

Steps

1. Cast Alrund's Epiphany by paying
2. Saheeli triggers, creating a 1/1 Servo artifact creature token
3. Resolve Alrund's Epiphany, causing you to create two 1/1 Bird creature tokens, take an extra turn after this one and exile Alrund's Epiphany
4. Activate Saheeli by removing two loyalty counters from it, causing the Servo to become a copy of Mirror of Fate until end of turn
5. Activate the Servo by tapping and sacrificing it, choosing Alrund's Epiphany and up to six other cards face up in exile, then exiling your library and putting the chosen cards on top of your library, with Alrund's Epiphany being the topmost card
6. If Saheeli has fewer than three loyalty counters on it, activate Venser's first loyalty ability by putting two loyalty counters on it, exiling Saheeli until your next end step
7. At the beginning of your end step, if you activated Venser's ability, Venser triggers, returning Saheeli from exile to the battlefield
8. Repeat each turn, drawing Alrund's Epiphany during your draw step

Results

• Infinite turns