Jegantha, the Wellspring + Horde of Notions + Altar of Dementia + Frostcliff Siege

Jegantha, the Wellspring

Horde of Notions

Altar of Dementia

Frostcliff Siege

How it works

1. Activate Jegantha by tapping it, adding that cannot be spent to pay generic mana costs.
2. Activate Altar of Dementia 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 leverages Jegantha, the Wellspring as both its own mana source and its own recurring threat, utilizing its unique restriction-free colored mana ability to fuel the cycle. By tapping Jegantha for the exact five-color requirement needed to activate Horde of Notions, you can immediately cast the elk back from your graveyard—a recursion made possible because Horde of Notions lets you play target Elemental cards directly from the graveyard without paying costs. Along the way, Altar of Dementia provides the sacrifice outlet that bins Jegantha to trigger the loop while simultaneously milling your opponents out with infinite sacrifice and death triggers. Meanwhile, Frostcliff Siege sits quietly on the board providing an alternate passive boost if needed, ensuring this elemental engine grinds through your entire deck until victory is assured.