This clever little loop turns Marvin, Murderous Mimic into a self-contained mana engine by borrowing the right abilities from the table. While Cradle Clearcutter provides the muscle—tapping to generate green mana based on its own power—Pili-Pala supplies the untap mechanism alongside a color-fixing engine through its own unique untap symbol ability. By using Marvin to combine both creatures' activated abilities onto a single body, you can tap for green mana and immediately pay that back to untap, cycling the process to continuously pump out infinite colored mana.