Rex, Cyber-Hound + Pili-Pala + Endrider Catalyzer

Prerequisites

• You have max speed.
• Rex does not have summoning sickness.
• Endrider Catalyzer and Pili-Pala exiled with a brain counter on them.

Steps

1. 1Activate Rex using Endrider Catalyzer's ability by tapping it, adding .
2. 2Activate Rex using Pili-Pala's ability by paying and untapping it, adding one mana of any color.
3. 3Repeat.

Effects

• Infinite colored mana