Jegantha, the Wellspring + Horde of Notions + Urabrask the Hidden + Carrion Feeder

Jegantha, the Wellspring

Horde of Notions

Urabrask the Hidden

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 elegant loop relies on Horde of Notions and its ability to pull fallen elements straight from the graveyard, transforming Jegantha, the Wellspring into a self-sustaining engine. Because Jegantha's tap produces the exact five-color mana requirement needed to activate Horde of Notions without paying any generic mana, the cost is completely covered every single time. Meanwhile, Carrion Feeder acts as the necessary outlet to bin Jegantha for free, racking up endless sacrifice triggers and +1/+1 counters while Urabrask the Hidden ensures that your returning companion doesn't suffer from summoning sickness upon re-entry.