Ith, High Arcanist + Mesmeric Orb

Prerequisites

• Ith does not have summoning sickness.

Steps

1. 1Declare Ith as an attacker.
2. 2Activate Ith by tapping it, untapping Ith and preventing all combat damage that would be dealt to or dealt by it this turn.
3. 3Mesmeric Orb triggers, causing you to mill a card.
4. 4Repeat from step 2.

Effects

• Infinite self-mill