Morophon, the Boundless + Fist of Suns + Spider-Byte, Web Warden

Morophon, the Boundless

Fist of Suns

Spider-Byte, Web Warden

How it works

1. Cast Spider-Byte by paying 0.
2. When Spider-Byte enters, it triggers, returning itself from the battlefield to your hand.
3. Repeat.

This clever loop turns Fist of Suns and Morophon, the Boundless into an absolute cost-reduction engine. By choosing the creature type "Spider" as Morophon enters, its static ability discounts the colored mana cost of spells of that type by {W}{U}{B}{R}{G}—which completely offsets the alternative {W}{U}{B}{R}{G} cost established by Fist of Suns. This means you can cast Spider-Byte, Web Warden for free, utilizing its enters-the-battlefield trigger to bounce itself right back to your hand so you can repeat the process indefinitely for an infinite storm count and endless creature triggers.