Tana, the Bloodsower + Time Sieve + Mycosynth Lattice

Tana, the Bloodsower

Time Sieve

Mycosynth Lattice

How it works

1. Deal combat damage to an opponent using Tana.
2. Tana triggers, creating at least five 1/1 Saproling creature tokens.
3. Activate Time Sieve by tapping it and sacrificing five Saprolings, causing you to take an extra turn after this one.
4. Repeat each turn.

By turning the entire board into artifacts with Mycosynth Lattice, every permanent you control suddenly becomes legitimate fuel for Time Sieve. This lets you cash in the horde of tokens generated by Tana, the Bloodsower whenever she crashes into an opponent for combat damage. With those five newly minted Saprolings sacrificed to the Sieve, you secure an extra turn to repeat the process, locking your opponents out of the game entirely.