Senator Peacock + Ugin's Nexus + Esoteric Duplicator

Senator Peacock

Ugin's Nexus

Esoteric Duplicator

How it works

1. During your end step, activate Ugin's Nexus by paying 2 and sacrificing it.
2. Ugin's Nexus is exiled instead of being put into your graveyard, causing you to take an extra turn after this one.
3. Esoteric Duplicator and Senator Peacock trigger.
4. Resolve the Esoteric Duplicator trigger, causing you to pay 2 to create a token copy of Ugin's Nexus at the beginning of your next end step.
5. Resolve the Senator Peacock trigger, targeting itself.
6. Resolve the Ugin's Nexus ability, causing you to draw a card.
7. Move to your extra turn.
8. At the beginning of your end step, Esoteric Duplicator triggers, creating a token copy of Ugin's Nexus.
9. Repeat.