Urza, Lord High Artificer, Worldwalker Helm, and Stolen Identity

Prerequisites

• Urza, Lord High Artificer on the battlefield
• Worldwalker Helm on the battlefield
• Stolen Identity in hand
• available

Steps

1. Cast Stolen Identity by paying , creating a token copy of Worldwalker Helm and a Map token
2. Activate Urza's first ability by tapping a Worldwaker Helm and a Map, adding
3. Activate a Worldwalker Helm by paying and tapping it, creating a token copy of the Worldwalker Helm token plus a Map token for each Worldwalker Helm you control
4. Activate Urza's first ability twice by tapping two Maps, adding
5. Repeat from step 3

Results

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