Jegantha, the Wellspring + Horde of Notions + Thermopod + Kratos, God of War

Jegantha, the Wellspring

Horde of Notions

Thermopod

Kratos, God of War

How it works

1. Activate Jegantha by tapping it, adding that cannot be spent to pay generic mana costs.
2. Activate Thermopod 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 Horde of Notions and its ability to pull elementals straight from your graveyard, utilizing Jegantha, the Wellspring as the recursive target because Jegantha conveniently fits the elemental type. When you tap Jegantha for mana, its restriction is bypassed entirely by Thermopod's sacrifice outlet, which turns the resulting color combination into pure red mana while feeding the loop. Meanwhile, Kratos, God of War quietly ensures that haste is constantly granted to everything entering the battlefield, smoothing the cycle and allowing the newly recast Jegantha to immediately tap and repeat the entire process indefinitely.