Retrofitter Foundry, Krark-Clan Ironworks, Clock of Omens, and Adrix and Nev, Twincasters

Prerequisites

• Retrofitter Foundry on the battlefield
• Krark-Clan Ironworks on the battlefield
• Clock of Omens on the battlefield
• Adrix and Nev, Twincasters on the battlefield
• available

Steps

1. Activate Retrofitter Foundry's second ability by paying 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
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

Results

• Infinite colorless mana
• Infinite creature tokens
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite mana artifacts you control can produce
• Infinite sacrifice triggers
• Infinite untap of artifacts you control