Jegantha, the Wellspring + Horde of Notions + Akroma's Memorial + Yahenni, Undying Partisan

Jegantha, the Wellspring

Horde of Notions

Akroma's Memorial

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 recursive loop relies on Jegantha, the Wellspring to self-fund its own resurrection, tapping to generate the exact five-color mana requirement needed by Horde of Notions to pull elemental cards straight from the graveyard. While Jegantha's mana restriction means it cannot pay for generic costs, Horde of Notions bypasses this entirely by casting the elk avatar for free. To keep the cycle going, Yahenni, Undying Partisan steps in as the designated executioner, sacrificing Jegantha to trigger infinite deaths while gaining protection and counters. Meanwhile, Akroma's Memorial sits proudly on the battlefield to grant haste, ensuring Jegantha can tap the very moment it returns to the battlefield without suffering from summoning sickness.