Time Sieve + Myr Battlesphere + Teleportation Circle + Yarok, the Desecrated

Time Sieve

Myr Battlesphere

Teleportation Circle

Yarok, the Desecrated

How it works

1. At the beginning of your end step, Teleportation Circle triggers, blinking Myr Battlesphere.
2. When Myr Battlesphere enters the battlefield, its first ability triggers twice, creating eight 1/1 Myr artifact creature tokens.
3. Activate Time Sieve by tapping it and sacrificing five Myrs, causing you to take an extra turn after this one.
4. Repeat each turn.

This ingenious loop secures infinite turns by combining an endless army of mechanical minions with a relentless calendar. Teleportation Circle sets the rhythm by blinking Myr Battlesphere every single end step, and thanks to Yarok, the Desecrated doubling that entry trigger, you are showered with eight fresh Myr artifact creature tokens each time. Once you have your new metallic swarm, Time Sieve happily digests five of those tokens alongside its own tap to buy you another full turn, locking down the game as the cycle repeats indefinitely.