Time Sieve + Myr Battlesphere + Teleportation Circle + Trove of Temptation

Time Sieve

Myr Battlesphere

Teleportation Circle

Trove of Temptation

How it works

1. At the beginning of your end step, Teleportation Circle and Trove of Temptation trigger.
2. Resolve the Teleportation Circle trigger, blinking Myr Battlesphere.
3. When Myr Battlesphere enters the battlefield, its first ability triggers, creating four 1/1 Myr artifact creature tokens.
4. Resolve the Trove of Temptation trigger, creating a Treasure artifact token.
5. Activate Time Sieve by tapping it and sacrificing the Treasure and Myrs, causing you to take an extra turn after this one.
6. Repeat each turn.

This elegant setup uses Teleportation Circle to continuously blink Myr Battlesphere at the start of every end step, effortlessly replenishing your board with four fresh Myr artifact creature tokens. Meanwhile, Trove of Temptation reliably provides the fifth artifact you need every turn in the form of a Treasure token. Once you have your mandatory batch of artifacts assembled, you simply tap Time Sieve and sacrifice the lot to chain infinite extra turns.