Jegantha, the Wellspring + Horde of Notions + Maelstrom Wanderer + Yahenni, Undying Partisan

Jegantha, the Wellspring

Horde of Notions

Maelstrom Wanderer

Yahenni, Undying Partisan

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 looping spectacle revolves around Jegantha, the Wellspring generating the exact five-color mana restriction requirement needed to fuel Horde of Notions' activated ability, which directly targets and pulls Jegantha right back out of the graveyard for free. To keep the engine running smoothly, Yahenni, Undying Partisan steps in as the designated executioner, sacrificing Jegantha to trigger the necessary death while simultaneously granting itself protection via its own indestructible ability. Meanwhile, Maelstrom Wanderer passively ensures that every iteration of Jegantha re-enters the battlefield with immediate haste, allowing the tap ability to be reused instantly without summoning sickness slowing you down.