Urza, Prince of Kroog + Magic Pot + Krark-Clan Ironworks + Exalted Sunborn

Urza, Prince of Kroog

Magic Pot

Krark-Clan Ironworks

Exalted Sunborn

How it works

1. Activate Urza by paying 6, creating two token copies of Magic Pot that are 1/1 Soldiers.
2. Activate Krark-Clan Ironworks twice by sacrificing the Magic Pot tokens, adding CCCC.
3. When the Magic Pot tokens die, they trigger, creating four Treasure tokens.
4. Activate two Treasures by tapping and sacrificing them, adding 2.
5. Repeat.

This engine turns a handful of scrap into an endless mechanical treasury by leveraging Exalted Sunborn as a powerful token multiplier that doubles every copy Urza, Prince of Kroog manufactures. With that doubling effect active, every activation of Urza targeting Magic Pot yields twice as many soldier-artifact copies, which you can immediately feed into Krark-Clan Ironworks to generate a surplus of colorless mana. As those Magic Pot tokens perish in the ironworks, their own triggered abilities fire off and are similarly doubled by the Sunborn, creating a flood of Treasure tokens that can be cracked for colored mana to sustain the loop indefinitely.