Mite Overseer + Krark-Clan Ironworks + Lifecreed Duo + Stridehangar Automaton

Mite Overseer

Krark-Clan Ironworks

Lifecreed Duo

Stridehangar Automaton

How it works

1. Activate Mite Overseer by paying 3W/P, creating a 1/1 Thopter and a 1/1 Phyrexian Mite artifact creature token.
2. When the Phyrexian Mite and Thopter enter, Lifecreed Duo triggers twice, causing you to gain 2 life
3. Activate Krark-Clan Ironworks twice by sacrificing the Phyrexian Mite and Thopter, adding CCCC.
4. Repeat.

This engine harnesses the token-multiplying power of Stridehangar Automaton to turn Mite Overseer's activated ability into a net-positive mana and life loop. Whenever you pay to create a Phyrexian Mite, the Automaton sneaks in an extra Thopter alongside it, and the resulting influx of fresh bodies triggers Lifecreed Duo to keep your life total safely padded. Finally, you cash in both newly minted artifacts to Krark-Clan Ironworks for more than enough colorless mana to repeat the process indefinitely, all while Mite Overseer's static buff stands ready to pump your endless army if you choose to swing.