This delightful engine uses The Unbeatable Squirrel Girl as your primary token-making powerhouse, letting you dump mana into her activated ability to double your rodent army. Thanks to Fervor granting immediate haste, your newly spawned tokens don't have to wait around and can immediately tap themselves for mana using the lovely ability granted by Insidious Roots. That generated mana directly feeds back into The Unbeatable Squirrel Girl's cost, letting you loop the process endlessly to flood the board with an unstoppable, hyper-fast horde of fuzzy doom.