This ingenious loop turns Jegantha, the Wellspring into a self-recycling engine, fueled entirely by its own tap ability. Because Jegantha taps for the exact five-color mana requirement needed to activate Horde of Notions, you can repeatedly pull Jegantha straight back out of the graveyard onto the battlefield without ever paying its mana cost. Meanwhile, Bartolomé del Presidio acts as the sacrificial outlet that sends Jegantha back to the graveyard to feed the Horde, while also growing bigger every time thanks to its own sacrifice ability. Rising of the Day ties the whole operation together by granting haste to your creatures, ensuring Jegantha can tap for mana the absolute instant it returns to the battlefield.