Jegantha, the Wellspring + Horde of Notions + Mass Hysteria + Carrion Feeder

Jegantha, the Wellspring

Horde of Notions

Mass Hysteria

Carrion Feeder

How it works

1. Activate Jegantha by tapping it, adding that cannot be spent to pay generic mana costs.
2. Activate Carrion Feeder by sacrificing Jegantha.
3. Activate Horde of Notions by paying , causing you to cast Jegantha from your graveyard without paying its mana cost.
4. Repeat.

This looping engine relies on the unique colored mana restriction of Jegantha, the Wellspring—which conveniently happens to match the exact five-color activation cost required by Horde of Notions to cheat an Elemental from the graveyard directly onto the battlefield. Mass Hysteria ensures that Jegantha gains haste the moment it returns, bypassing summoning sickness so it can immediately tap for another dose of colorful energy. Meanwhile, Carrion Feeder acts as the designated executioner, devouring Jegantha to clear the board and fuel the graveyard recursion loop while growing larger with every iteration.