Jegantha, the Wellspring + Horde of Notions + Ashnod's Altar + Fires of Yavimaya

Jegantha, the Wellspring

Horde of Notions

Ashnod's Altar

Fires of Yavimaya

How it works

1. Activate Jegantha by tapping it, adding that cannot be spent to pay generic mana costs.
2. Activate Ashnod's Altar 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 clever loop turns Jegantha, the Wellspring into a self-sustaining engine by utilizing its own restrictive mana output to fuel Horde of Notions, which casts Jegantha right back out of the graveyard for free. Because Ashnod's Altar turns every iteration of Jegantha into a fresh sacrifice, you generate a surplus of colorless mana alongside endless death triggers. Meanwhile, Fires of Yavimaya quietly ensures that Jegantha's re-emergence from the graveyard suffers no summoning sickness, letting the entire loop fire continuously without missing a beat.