Jegantha, the Wellspring + Horde of Notions + Temur Ascendancy + Umbral Collar Zealot

Jegantha, the Wellspring

Horde of Notions

Temur Ascendancy

Umbral Collar Zealot

How it works

1. Activate Jegantha by tapping it, adding that cannot be spent to pay generic mana costs.
2. Activate Umbral Collar Zealot by sacrificing Jegantha.
3. Activate Horde of Notions by paying , causing you to cast Jegantha from your graveyard without paying its mana cost.
4. When Jegantha enters, Temur Ascendancy triggers, allowing you to draw a card.
5. Repeat.

This clever loop uses Horde of Notions as a reanimation engine, spending the exact five-color mana produced by Jegantha, the Wellspring to constantly recast it from the graveyard. While Temur Ascendancy ensures Jegantha enters the battlefield with haste and rewards your efforts by drawing you a card every time it arrives, Umbral Collar Zealot acts as the sacrificial outlet that neatly sends Jegantha back to the graveyard while filtering your library with surveil triggers.