Activate Mindslaver by paying {4}, tapping and sacrificing it, targeting the next opponent in turn order.
Esoteric Duplicator triggers, causing you to pay {2} to create a copy of Mindslaver at the beginning of the next end step.
Resolve the Mindslaver ability, causing you to control the targeted opponent during their next turn.
At the beginning of the next end step, Esoteric Duplicator triggers, creating a token copy of Mindslaver.
Repeat during each turn, including your opponents' turns, unless you are the next player in turn order.

You control your opponents on each of their turns

Lock

Esoteric Duplicator

Mindslaver

During your end step, activate Krark-Clan Ironworks by sacrificing Ugin's Nexus, adding {C}{C}.
Ugin's Nexus is exiled instead of being put into your graveyard, causing you to take an extra turn after this one.
Esoteric Duplicator triggers, causing you to pay {2} to create a token copy of Ugin's Nexus at the beginning of your next end step.
Move to your extra turn.
At the beginning of your end step, Esoteric Duplicator triggers, creating a token copy of Ugin's Nexus.
Repeat.

Infinite turns

Ugin's Nexus

Krark-Clan Ironworks

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

Combos with "Esoteric Duplicator"