Jegantha, the Wellspring + Horde of Notions + Yahenni, Undying Partisan + Tuktuk Rubblefort

Jegantha, the Wellspring

Horde of Notions

Yahenni, Undying Partisan

Tuktuk Rubblefort

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 relies on Horde of Notions to continually resurrect its own fuel, turning graveyard recursion into a self-sustaining engine. You tap Jegantha, the Wellspring for its precise five-color mana, which conveniently pays the exact color requirement demanded by Horde of Notions' activated ability to pull Jegantha right back from the graveyard. Meanwhile, Tuktuk Rubblefort ensures that Jegantha gains haste immediately upon re-entering the battlefield so it can be tapped again right away. Finally, Yahenni, Undying Partisan acts as the sacrificial outlet that neatly sends Jegantha back to the graveyard while growing larger with every iteration, generating an endless cascade of triggers.