Jegantha, the Wellspring + Horde of Notions + Yahenni, Undying Partisan + Thousand-Year Elixir

Jegantha, the Wellspring

Horde of Notions

Yahenni, Undying Partisan

Thousand-Year Elixir

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 loop turns Jegantha, the Wellspring into a self-recycling engine fueled entirely by its own restrictive mana production. By tapping Jegantha for its unique five-color mana, you can immediately pay the activation cost of Horde of Notions, whose ability plucks Jegantha right back out of the graveyard to recast it for free. Meanwhile, Thousand-Year Elixir ensures that your activated abilities and creature taps flow smoothly without summoning sickness interruptions, and Yahenni, Undying Partisan safely devours Jegantha each iteration to feed its own growth with endless death triggers.