Jegantha, the Wellspring + Horde of Notions + Yahenni, Undying Partisan + Tyvar, Jubilant Brawler

Jegantha, the Wellspring

Horde of Notions

Yahenni, Undying Partisan

Tyvar, Jubilant Brawler

How it works

1. Activate Jegantha by tapping it, adding that cannot be spent to pay generic mana costs.
2. Activate Yahenni 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 ingenious loop harnesses Horde of Notions and its five-color ability to repeatedly pull Jegantha, the Wellspring right back out of the graveyard without paying its mana cost. Tapping Jegantha generates the exact five-color mana required to fuel the Horde, while Yahenni, Undying Partisan acts as the necessary sacrifice outlet to send Jegantha back to the graveyard and rack up endless death triggers. Meanwhile, Tyvar, Jubilant Brawler makes sure the whole engine stays frictionless by granting haste to your creatures' activated abilities, letting Jegantha tap the very moment it hits the battlefield.