Prosper, Tome-Bound + Goldspan Dragon + Flameskull + Umbral Collar Zealot + Mondrak, Glory Dominus

Prosper, Tome-Bound

Goldspan Dragon

Flameskull

Umbral Collar Zealot

Mondrak, Glory Dominus

How it works

1. Activate Umbral Collar Zealot by sacrificing Flameskull.
2. When Flameskull dies, it triggers, exiling it and the top card of your library with the ability to cast one from exile this turn.
3. Resolve the Umbral Collar Zealot ability.
4. Cast Flameskull from exile by paying 1.
5. Prosper's second ability triggers, creating two Treasure tokens.
6. Activate the Treasures by tapping and sacrificing them, adding 2.
7. Repeat.

This intricate loop turns the fiery resurrection of Flameskull into an engine of endless wealth and card evaluation. By sacrificing Flameskull to Umbral Collar Zealot, you trigger its Rejuvenation ability to exile itself alongside the top card of your library, setting up a window to recast it. When you cast Flameskull from exile, Prosper, Tome-Bound spots the play from exile and triggers Pact Boon to generate a Treasure token, which is instantly doubled into a pair of Treasures thanks to Mondrak, Glory Dominus's replacement effect. Goldspan Dragon elevates these Treasures by doubling their mana yield when sacrificed, effortlessly funding the {1}{R}{R} cost to recast Flameskull and netting you infinite colored mana, artifact tokens, and surveil triggers to tear through your entire library.