Medomai the Ageless + Identity Thief + Deadeye Navigator

Declare Identity Thief as an attacker.

Identity Thief triggers, exiling Medomai and causing Identity Thief to become a copy of Medomai until end of turn.

Deal combat damage to an opponent using Identity Thief.

Identity Thief triggers, causing you to take an extra turn after this one.

At the beginning of your end step, Identity Thief triggers.

Holding priority, activate Identity Thief by paying , blinking it.

Identity Thief enters the battlefield, triggering Deadeye Navigator's soulbond ability, repairing Identity Thief and Deadeye Navigator.

Resolve the Identity Thief trigger, returning Medomai from exile to the battlefield.

Repeat each turn.