Mite Overseer + Ashnod's Altar + Prosperous Innkeeper + Stridehangar Automaton

Mite Overseer

Ashnod's Altar

Prosperous Innkeeper

Stridehangar Automaton

How it works

1. Activate Mite Overseer by paying 3W/P, creating two creature tokens.
2. When the creature tokens enter the battlefield, Prosperous Innkeeper triggers twice, causing you to gain 2 life.
3. Activate Ashnod's Altar twice by sacrificing the creature tokens, adding CCCC.
4. Repeat.

This loop relies on the clever synergy of token multiplication and mana conversion to spin out of control. With Stridehangar Automaton doubling your token generation, every activation of Mite Overseer actually yields two tokens instead of one—which generously feeds Prosperous Innkeeper's life-gaining triggers along the way. You then feed those newly minted tokens right into Ashnod's Altar, sacrificing them to generate more than enough colorless mana to pay for the next Mite Overseer activation and leave plenty of profit behind.