Arixmethes, Slumbering Isle + Pili-Pala + Rex, Cyber-Hound

GWU identity

Commander legal

The 3 combo pieces

• Arixmethes, Slumbering Isle
• Pili-Pala
• Rex, Cyber-Hound

How to execute it

1. Activate Rex using Arixmethes's ability by tapping it, adding {G}{U}
2. Activate Rex using Pili-Pala's ability by paying {2} and untapping it, adding one mana of any color.
3. Repeat.

What the combo produces

• Infinite colored mana