Luminous Broodmoth + Pitiless Plunderer + Bloodsoaked Champion + Carrion Feeder

Luminous Broodmoth

Pitiless Plunderer

Bloodsoaked Champion

Carrion Feeder

How it works

1. Activate Carrion Feeder by sacrificing Bloodsoaked Champion.
2. When Bloodsoaked Champion dies, Luminous Broodmoth and Pitiless Plunderer trigger.
3. Resolve the Luminous Broodmoth trigger, returning Bloodsoaked Champion from your graveyard to the battlefield with a flying counter on it.
4. Resolve the Pitiless Plunderer trigger, creating a Treasure token.
5. Activate Carrion Feeder by sacrificing Bloodsoaked Champion.
6. When Bloodsoaked Champion dies, Pitiless Plunderer triggers, creating a Treasure token.
7. Resolve the Carrion Feeder abilities from steps 1 and 5, putting two +1/+1 counters on it.
8. Activate the Treasures by tapping and sacrificing them, adding 1.
9. Activate Bloodsoaked Champion by paying 1, returning it from your graveyard to the battlefield.
10. Repeat.

This elegant loop turns Carrion Feeder into an endlessly growing threat by continuously recycling Bloodsoaked Champion through the graveyard. While Carrion Feeder provides the sacrifice outlet to send the Champion away, Pitiless Plunderer and Luminous Broodmoth work in tandem the first time around: Pitiless Plunderer converts the death into a handy Treasure token, and Luminous Broodmoth brings the Champion straight back to the battlefield (complete with a flying counter). Once that flying counter prevents the Broodmoth from catching it a second time, you simply crack the Treasure for the mana needed to trigger the Champion's own raid-like recursion ability right out of the graveyard.