Time Sieve + Myr Battlesphere + Thassa, Deep-Dwelling + Thopter Spy Network

Time Sieve

Myr Battlesphere

Thassa, Deep-Dwelling

Thopter Spy Network

How it works

1. At the beginning of your upkeep, Thopter Spy Network's first ability triggers, creating a 1/1 Thopter artifact creature token.
2. At the beginning of your end step, Thassa triggers, blinking Myr Battlesphere.
3. When Myr Battlesphere enters the battlefield, its first ability triggers, creating four 1/1 Myr artifact creature tokens.
4. Activate Time Sieve by tapping it, sacrificing the Thopter and the four Myrs, causing you to take an extra turn after this one.
5. Repeat each turn.

This clever engine harnesses a steady stream of sacrifices to bend time to your will. Each turn cycle begins with Thopter Spy Network automatically generating a disposable artifact creature during your upkeep, while Thassa, Deep-Dwelling resets Myr Battlesphere at the end of your turn to flood the board with four fresh Myr tokens. With five artifact bodies now at your disposal, you can tap and sacrifice the entire batch to Time Sieve to take an extra turn, bypassing the usual limits of the board. As the loop repeats endlessly, Myr Battlesphere can also leverage its massive army to threaten opponents directly, while Thopter Spy Network keeps your hand full of cards whenever your artifact creatures deal combat damage.