This clever loop relies on Horde of Notions and its ability to pull your fallen Elementals straight from the graveyard to the battlefield for five colored mana. Jegantha, the Wellspring is the key engine piece here, since tapping it generates the exact five-color requirement—{W}{U}{B}{R}{G}—needed to activate Horde of Notions again, neatly bypassing the restriction that its mana can't pay generic costs. To keep the cycle going, Umbral Collar Zealot acts as the necessary sacrifice outlet to send Jegantha back to the graveyard so it can be replayed repeatedly. Meanwhile, Maelstrom Wanderer grants haste to your recurring creatures, ensuring everything operates at maximum efficiency.