Prerequisites
- Urza, Lord High Artificer on the battlefield
- Worldwalker Helm on the battlefield
- Mechanized Production on the battlefield
Steps
- At the beginning of your upkeep, Mechanized Production triggers, creating a token copy of Worldwalker Helm and a Map token
- Activate Urza's first ability by tapping a Worldwaker Helm and a Map, adding
- Activate a Worldwalker Helm by paying and tapping it, creating a token copy of the Worldwalker Helm token and two Map tokens
- Activate Urza's first ability twice by tapping the Maps, adding
- Repeat from step 3
Results
Required Cards 3
Urza, Lord High Artificer
Legendary Creature — Human Artificer
Mechanized Production
Enchantment — Aura