Conjurer's Closet, Eternal Witness, and Walk the Aeons

Prerequisites

• Conjurer's Closet on the battlefield
• Eternal Witness on the battlefield
• Walk the Aeons in hand
• available

Steps

1. Cast Walk the Aeons by paying , taking an extra turn after this one
2. At the beginning of your end step, Conjurer's Closet triggers, blinking Eternal Witness
3. Eternal Witness enters the battlefield, returning Walk the Aeons from your graveyard to your hand
4. Repeat

Results

• Infinite ETB
• Infinite LTB
• Infinite turns