Mite Overseer + Krark-Clan Ironworks + Ajani's Welcome + Stridehangar Automaton

Mite Overseer

Krark-Clan Ironworks

Ajani's Welcome

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, Ajani's Welcome 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 brilliant engine turns life and mana into an unstoppable cascade of mechanical creations, perfectly suited for Commander, Legacy, Oathbreaker, and Vintage tables. You begin by activating Mite Overseer, whose Phyrexian activation cost can be heavily discounted by the life gained from Ajani's Welcome. Thanks to Stridehangar Automaton's replacement effect, every activation yields not just a Phyrexian Mite, but also an extra flying Thopter to swell your ranks. Finally, you sacrifice both newly minted artifacts to Krark-Clan Ironworks, generating more than enough colorless mana to repeat the loop indefinitely while feeding infinite death, sacrifice, and lifegain triggers.