Ugin's Nexus + Esoteric Duplicator + Sarcatog

Prerequisites

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Steps

1. 1During your end step, activate Sarcatog's second ability by sacrificing Ugin's Nexus.
2. 2Ugin's Nexus is exiled instead of being put into your graveyard, causing you to take an extra turn after this one.
3. 3Esoteric Duplicator triggers, causing you to pay to create a token copy of Ugin's Nexus at the beginning of your next end step.
4. 4Resolve the Sarcatog ability, giving it +1/+1 until end of turn.
5. 5Move to your extra turn.
6. 6At the beginning of your end step, Esoteric Duplicator triggers, creating a token copy of Ugin's Nexus.
7. 7Repeat.

Effects

• Infinite turns
• Lock