Jegantha, the Wellspring + Horde of Notions + Woe Strider + Urabrask the Hidden

Jegantha, the Wellspring

Horde of Notions

Woe Strider

Urabrask the Hidden

How it works

1. Activate Jegantha by tapping it, adding that cannot be spent to pay generic mana costs.
2. Activate Woe Strider 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 intricate loop relies on Jegantha, the Wellspring generating the exact five-color mana requirement for Horde of Notions's ability, circumventing the mana restriction entirely because casting a spell from the graveyard without paying its mana cost doesn't involve paying generic costs. Woe Strider acts as the sacrificial engine that sends Jegantha back to the graveyard to be reanimated while fueling your card selection with repeated scry triggers. Meanwhile, Urabrask the Hidden ensures that Jegantha (and any other creatures you loop) enters the battlefield ready for immediate action with haste, allowing you to tap it straight away.