Mesmeric Orb, and Aphetto Alchemist

Prerequisites

• Mesmeric Orb on the battlefield
• Aphetto Alchemist on the battlefield
• Aphetto Alchemist does not have summoning sickness

Steps

1. Activate Aphetto Alchemist by tapping it, untapping itself
2. When Aphetto Alchemist becomes untapped, Mesmeric Orb triggers, causing you to mill a card
3. Repeat

Results

• Infinite self-mill