Time Sieve + Mimic Vat + Myr Battlesphere

Time Sieve

Mimic Vat

Myr Battlesphere

How it works

1. Activate Mimic Vat, putting a token copy of Myr Battlesphere onto the battlefield.
2. The Myr Battlesphere Token triggers, creating four Myr tokens.
3. Activate Time Sieve, sacrificing Myr Battlesphere and the 4 Myr tokens, getting an extra turn.
4. Pass the turn.
5. Repeat.

This ingenious loop relies on Mimic Vat to continuously manufacture fresh copies of Myr Battlesphere, which generously supplies the exact number of artifact bodies needed to fuel Time Sieve. By exploiting the Myr Battlesphere token's entrance trigger to flood your board with four Myr tokens alongside the Battlesphere itself, you suddenly have the precise quota of five artifacts required to activate Time Sieve's ultimate sacrifice. You cash them all in for an extra turn, untap, and use Mimic Vat to repeat the entire mechanical cycle—locking your opponents out of the game through a relentless succession of infinite turns.