Retrofitter Foundry + Ashnod's Altar + Clock of Omens + Anointed Procession

Retrofitter Foundry

Ashnod's Altar

Clock of Omens

Anointed Procession

How it works

1. Activate Retrofitter Foundry's second ability by paying 2 and tapping it, creating two 1/1 Servo artifact creature tokens.
2. Activate Clock of Omens by tapping the Servos, untapping Retrofitter Foundry.
3. Activate Ashnod's Altar by sacrificing a Servo, adding CC.
4. Repeat.
5. Once you have infinite mana, you may instead use Retrofitter Foundry's first ability to untap it and get infinite untapped Servo tokens.

This clever loop turns Retrofitter Foundry into an unstoppable token and mana engine, supercharged by Anointed Procession doubling every Servo, Thopter, and Construct that would be created. You use Ashnod's Altar to sacrifice one of those duplicated tokens for two colorless mana, funding the Foundry's activation costs while generating an abundance of sacrifice triggers. Meanwhile, Clock of Omens leverages your newly spawned artifacts to untap the Foundry, keeping the cycle going and eventually letting you transition into producing infinite colorless mana alongside an endless army of tokens.