Jegantha, the Wellspring + Horde of Notions + Shilgengar, Sire of Famine + Fires of Yavimaya

Jegantha, the Wellspring

Horde of Notions

Shilgengar, Sire of Famine

Fires of Yavimaya

How it works

1. Activate Jegantha by tapping it, adding that cannot be spent to pay generic mana costs.
2. Activate Shilgengar 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 relies on Jegantha, the Wellspring to self-fund the entire engine: tapping the creature produces the exact five-color mana requirement needed to activate Horde of Notions' ability, which instantly plucks Jegantha right back out of the graveyard. To bridge the gap, Shilgengar, Sire of Famine sits in play to patiently sacrifice Jegantha for a Blood token every iteration, fueling an endless cycle of creature returns. Meanwhile, Fires of Yavimaya grants the resurrected Jegantha immediate haste so it can tap for mana the very moment it re-enters the battlefield, keeping this five-color infinite sacrifice engine humming smoothly.