Argothian Elder + Toph, the First Metalbender + Ygra, Eater of All

BRGW identity

Commander legal

The 3 combo pieces

• Argothian Elder
• Toph, the First Metalbender
• Ygra, Eater of All

How to execute it

1. Activate Argothian Elder by tapping it, untapping it as it's a land due to Toph and Ygra, and another land you control.
2. Repeat.

What the combo produces

• Infinite mana lands you control can produce
• Infinite mana nontoken artifacts you control can produce
• Infinite untap of lands you control
• Infinite untap of nontoken artifacts you control