Jegantha, the Wellspring + Horde of Notions + Goblin Bombardment + Mass Hysteria

Jegantha, the Wellspring

Horde of Notions

Goblin Bombardment

Mass Hysteria

How it works

1. Activate Jegantha by tapping it, adding that cannot be spent to pay generic mana costs.
2. Activate Goblin Bombardment 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 delightful loop turns Jegantha, the Wellspring into an endless cannonball, leveraging its own five-color tap ability to fund the recursion. Since Mass Hysteria grants haste to all creatures, a freshly recurred Jegantha can immediately tap for the exact colored mana needed to pay Horde of Notions' activation cost. You simply feed Jegantha to Goblin Bombardment to deal a point of damage and send it to the graveyard, ready for Horde of Notions to cast it right back to the battlefield without paying its mana cost.