Rex, Cyber-Hound, Pili-Pala, and Sacellum Godspeaker

Prerequisites

• Rex, Cyber-Hound on the battlefield
• Pili-Pala in exile
• Sacellum Godspeaker in exile
• You have at least two creature cards with power 5 or greater in your hand
• Rex does not have summoning sickness
• Sacellum Godspeaker and Pili-Pala exiled with a brain counter on them

Steps

1. Activate Rex using Sacellum Godspeaker's ability by tapping it, revealing at least two cards and adding at least
2. Activate Rex using Pili-Pala's ability by paying and untapping it, adding one mana of any color
3. Repeat

Results

• Infinite colored mana