Mite Overseer + Krark-Clan Ironworks + Social Climber + Stridehangar Automaton

Mite Overseer

Krark-Clan Ironworks

Social Climber

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, Social Climber 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 looping engine sets up a profitable cycle of creation and sacrifice, all fueled by Stridehangar Automaton's replacement effect which tacks an extra Thopter onto every token-making event. When you activate Mite Overseer, the Automaton doubles your output into a Phyrexian Mite and a Thopter, immediately padding your life total twice over thanks to Social Climber's alliance triggers. You then feed both fresh artifacts directly into Krark-Clan Ironworks to generate four colorless mana—more than enough to pay the activation cost again and keep the loop running indefinitely.