Mechanized Production + Urza, Lord High Artificer + Worldwalker Helm

U identity

Commander legal

The 3 combo pieces

• Mechanized Production
• Urza, Lord High Artificer
• Worldwalker Helm

How to execute it

1. Create a copy of Worldwalker Helm, which will also create a Map token.
2. Activate Urza's first ability by tapping a Worldwaker Helm and a Map, adding {U}{U}.
3. Activate a Worldwalker Helm by paying {1}{U} and tapping it, creating a token copy of the Worldwalker Helm token and a Map token for each Worldwalker Helm you control.
4. Activate Urza's first ability twice by tapping two Maps, adding {U}{U}.
5. Repeat from step 3.

What the combo produces

• Cast all spells in your library
• Exile your library
• Infinite blue mana
• Infinite Map tokens