Prosper, Tome-Bound + Goldspan Dragon + Flameskull + Carrion Feeder + Doubling Season

Prosper, Tome-Bound

Goldspan Dragon

Flameskull

Carrion Feeder

Doubling Season

How it works

1. Activate Carrion Feeder 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 Carrion Feeder 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.

By feeding Flameskull to Carrion Feeder, you set off a recursive engine that recycles the elemental into exile and back again. Thanks to Prosper, Tome-Bound, every time you cast Flameskull from exile, you trigger the creation of a Treasure token, which is supercharged by Doubling Season to double your output into two doubled treasures. Goldspan Dragon amplifies those Treasures to yield four mana apiece when sacrificed, comfortably paying for Flameskull's recurring casting cost while generating an infinite surplus of mana, tokens, and death triggers.