Jegantha, the Wellspring + Horde of Notions + Goblin Bombardment + Dynaheir, Invoker Adept

Jegantha, the Wellspring

Horde of Notions

Goblin Bombardment

Dynaheir, Invoker Adept

How it works

1. Activate Jegantha by tapping it, adding that cannot be spent to pay generic mana costs.
2. Activate Goblin Bombardment 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 loop relies on Jegantha, the Wellspring generating the exact five-color mana requirement—{W}{U}{B}{R}{G}—needed to fuel Horde of Notions' ability, which brings Jegantha straight back from the graveyard for free. To keep the engine cycling, Goblin Bombardment provides the sacrifice outlet that sends Jegantha back to the graveyard after every loop while simultaneously converting the endless repetition into infinite damage. Meanwhile, Dynaheir, Invoker Adept sits on the board granting haste so your resurrected pieces can act immediately, tying the whole multicolor recursion machine together.