Medomai the Ageless + Identity Thief + Crystal Shard

Prerequisites

• Identity Thief does not have summoning sickness.
• Opponents can not block and kill Identity Thief.

Steps

1. 1Declare Identity Thief as an attacker.
2. 2Identity Thief triggers, exiling Medomai the Ageless, becoming a copy of it until end of turn and Return Medomai from exile to the battlefield at end of turn.
3. 3Deal combat damage with Identity Thief, causing you to take an additional turn after this one.
4. 4Activate Crystal Shard by paying and tapping it, returning Identity Thief from the battlefield to your hand.
5. 5Cast Identity Thief by paying .
6. 6At the beginning of your end step, Identity Thief triggers, returning Medomai from exile to the battlefield.
7. 7Pass the turn.
8. 8Repeat.

Effects

• Infinite turns
• Lock