Jegantha, the Wellspring + Horde of Notions + Carrion Feeder + Dynaheir, Invoker Adept

Jegantha, the Wellspring

Horde of Notions

Carrion Feeder

Dynaheir, Invoker Adept

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 loop relies on Jegantha, the Wellspring generating the exact five-color mana requirement needed to fund Horde of Notions' activated ability, which directly targets and pulls Jegantha right back out of the graveyard. To keep the cycle going, Carrion Feeder acts as the designated executioner, sacrificing Jegantha to the graveyard so Horde of Notions can replay it anew while stacking up an endless trail of +1/+1 counters. Meanwhile, Dynaheir, Invoker Adept sits on the battlefield granting haste and synergy, ensuring the engine runs fluidly without waiting for summoning sickness.