Jegantha, the Wellspring + Horde of Notions + Ashnod's Altar + Yarus, Roar of the Old Gods

Jegantha, the Wellspring

Horde of Notions

Ashnod's Altar

Yarus, Roar of the Old Gods

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 brilliant recursion loop relies on Jegantha, the Wellspring generating the exact five-color mana requirement needed to activate Horde of Notions, which plucks Jegantha right back out of the graveyard and onto the battlefield for free. To keep the cycle going, Ashnod's Altar steps in to sacrifice Jegantha for colorless mana—solving the restriction that Jegantha's own mana can't pay generic costs—while simultaneously fueling your death and sacrifice triggers. Meanwhile, Yarus, Roar of the Old Gods happily watches the action from the sidelines, granting your creatures haste to ensure everything operates at maximum speed without missing a beat.