Jegantha, the Wellspring + Horde of Notions + Ashnod's Altar + Temur Ascendancy

Jegantha, the Wellspring

Horde of Notions

Ashnod's Altar

Temur Ascendancy

How it works

1. Activate Jegantha by tapping it, adding that cannot be spent to pay generic mana costs.
2. Activate Ashnod's Altar 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 intricate engine relies on Jegantha, the Wellspring to provide the colorful fuel needed for the loop, since its ability yields the exact five-color requirement for Horde of Notions to repeatedly pull Jegantha straight out of the graveyard. Ashnod's Altar acts as the sacrificial engine that turns Jegantha into an endless stream of colorless mana while clearing the path for the Horde to recast it. Meanwhile, Temur Ascendancy quietly supercharges the entire operation, granting haste so Jegantha can tap immediately upon return while drawing you through your entire deck one heavy-hitting entry at a time.