Cogwork Assembler + Esika's Chariot + Ashnod's Altar + Primal Vigor

Cogwork Assembler

Esika's Chariot

Ashnod's Altar

Primal Vigor

How it works

1. Activate Cogwork Assembler by paying 7, creating two token copies of Esika's Chariot.
2. When the Esika's Chariots enter the battlefield, their first abilities trigger, creating four 2/2 Cat creature tokens.
3. Activate Ashnod's Altar four times by sacrificing the Cats, adding eight C.
4. Repeat.
5. Once you have infinite mana, you may forego sacrificing the Cats and/or target any other artifact using Cogwork Assembler.

This explosive loop relies on Primal Vigor's passive replacement effect to double every token generated, turning a single activation of Cogwork Assembler into an army of multiplying artifacts. As those copied vehicles flood the board, the entry of each Esika's Chariot triggers its ability to produce even more token creatures, which are immediately fed into Ashnod's Altar. The mana generated by sacrificing those creatures more than pays to repeat Cogwork Assembler's activation, leaving you with an unstoppable surplus of mana and infinite copies of your artifacts.