This clever loop comes together by letting Marvin, Murderous Mimic borrow the active talents of your other creatures to act as a self-sustaining mana engine. While Whisperer of the Wilds provides the initial green mana burst, Pili-Pala supplies the untap mechanic—and because Marvin copies these abilities without sharing their names, it can tap for mana and then untap itself indefinitely. The result is an endless cycle of tapping and untapping that pumps out infinite colored mana, ready to fund whatever massive spells you need to close out the game.