Marvin, Murderous Mimic + Pili-Pala + Ilysian Caryatid

Prerequisites

• You control a creature with power 4 or greater.
• Marvin does not have summoning sickness.

Steps

1. 1Activate Marvin using Ilysian Caryatid's ability by tapping it, adding two mana of any color.
2. 2Activate Marvin using Pili-Pala's ability by paying and untapping it, adding one mana of any color.
3. 3Repeat.

Effects

• Infinite colored mana