Filigree Sages + Mistvault Bridge + Prototype Portal + and 2 others

UB identity

Commander legal

The 5 combo pieces

• Filigree Sages
• Mistvault Bridge
• Prototype Portal
• Tiller Engine
• Training Grounds

How to execute it

1. Activate Prototype Portal by paying {0} and tapping it, creating a token copy of Mistvault Bridge.
2. When Mistvault Bridge enters the battlefield, Tiller Engine triggers, untapping it.
3. Activate the Mistvault Bridge token by tapping it, adding {U}.
4. Activate Filigree Sages by paying {U}, untapping Prototype Portal.
5. Repeat.

What the combo produces

• Infinite landfall triggers
• Infinite tapped copies of a specific land
• Infinite tapped Forest tokens
• Infinite tapped Island tokens
• Infinite tapped Mountain tokens
• Infinite tapped Plains tokens
• Infinite tapped Swamp tokens