Jegantha, the Wellspring + Horde of Notions + Blasting Station + Mass Hysteria

Jegantha, the Wellspring

Horde of Notions

Blasting Station

Mass Hysteria

How it works

1. Activate Jegantha by tapping it, adding that cannot be spent to pay generic mana costs.
2. Activate Blasting Station by tapping it and 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, Blasting Station triggers, untapping Blasting Station.
5. Repeat.

This infinite loop turns a colorful five-mana investment into a lethal barrage by cycling Jegantha, the Wellspring directly from the graveyard. Horde of Notions provides the engine to replay Jegantha for its exact color requirements without paying its mana cost, a feat uniquely fueled by Jegantha, the Wellspring's own {W}{U}{B}{R}{G} mana ability. Every time Jegantha returns, Mass Hysteria ensures it immediately has haste so you can tap it again, while Blasting Station provides both the sacrifice outlet to send Jegantha to the graveyard and the untap trigger that makes the entire loop repeatable.