Time Sieve + Mycosynth Lattice + Conspiracy + Xathrid Necromancer

Time Sieve

Mycosynth Lattice

Conspiracy

Xathrid Necromancer

How it works

1. Activate Time Sieve by tapping it and sacrificing five creatures.
2. The creatures die, triggering Xathrid Necromancer five times, creating five 2/2 Zombie creature tokens.
3. Resolve the Time Sieve ability, causing you to take an extra turn after this one.
4. Repeat each turn.

By weaving together Mycosynth Lattice and Conspiracy, this clever engine completely redefines what counts as a sacrificeable artifact for Time Sieve. With Mycosynth Lattice turning every permanent on the board into an artifact and Conspiracy ensuring your creatures are recognized as Humans, Xathrid Necromancer can easily replace your fallen workforce by spawning a fresh squad of Zombie tokens whenever they die. You simply sacrifice five of these newly minted "artifacts" to Time Sieve to take an extra turn, trigger Xathrid Necromancer's revival to rebuild your supply, and repeat the process indefinitely for infinite turns.