Breya, Etherium Shaper + Animation Module + Light of Promise + Crystalline Crawler + Adrix and Nev, Twincasters

Breya, Etherium Shaper

Animation Module

Light of Promise

Crystalline Crawler

Adrix and Nev, Twincasters

How it works

1. Activate Breya by paying 2 and sacrificing two other artifacts, causing you to gain 5 life.
2. Light of Promise triggers, putting five +1/+1 counters on Crystalline Crawler.
3. Animation Module triggers, holding priority, activate Crystalline Crawler's first ability three times by removing three +1/+1 counters from it, adding 3.
4. Resolve the Animation Module trigger, causing you to pay 1 to create two 1/1 Servo artifact creature tokens.
5. Repeat.

This loop is a masterclass in feedback loops, centered around Crystalline Crawler growing massive and fueling its own mana demands. When you activate Breya, Etherium Shaper to sacrifice artifacts and gain life, Light of Promise converts that life into a deluge of +1/+1 counters on the Crawler. Those counters can be immediately spent for mana to pay for Animation Module's trigger, which thanks to Adrix and Nev, Twincasters doubling your token output, produces a steady stream of sacrificial fodder to keep Breya fed.