Pitiless Plunderer + Eternal Witness + Mitotic Slime + Nethroi, Apex of Death + Carrion Feeder

Pitiless Plunderer

Eternal Witness

Mitotic Slime

Nethroi, Apex of Death

Carrion Feeder

How it works

1. Cast Nethroi either from your hand or from the command zone for its mutate cost by paying 4G/W plus commander tax, if applicable, putting it on top of a non-Human creature you control.
2. When Nethroi enters the battlefield, it triggers.
3. Holding priority, activate Carrion Feeder by sacrificing Nethroi.
4. When Nethroi dies, Pitiless Plunderer triggers, creating a Treasure artifact token.
5. Resolve the Carrion Feeder ability, putting a +1/+1 counter on it.
6. Resolve the Nethroi trigger from step 2, returning Eternal Witness and Mitotic Slime from your graveyard to the battlefield.
7. When Eternal Witness enters the battlefield, it triggers, returning Nethroi from your graveyard to your hand.
8. Activate Carrion Feeder twice by sacrificing Eternal Witness and Mitotic Slime.
9. When Eternal Witness and Mitotic Slime die, Pitiless Plunderer triggers twice and Mitotic Slime triggers once.
10. Resolve both Pitiless Plunderer triggers, creating two Treasure artifact tokens.
11. Resolve the Mitotic Slime trigger, creating two 2/2 Ooze creature tokens.
12. Resolve both Carrion Feeder abilities, putting two +1/+1 counters on it.
13. Activate Carrion Feeder twice by sacrificing two Oozes.
14. When the Oozes die, they each trigger and Pitiless Plunderer triggers twice.
15. Resolve both Pitiless Plunderer triggers, creating two Treasure artifact tokens.
16. Resolve both Ooze triggers, creating four 1/1 Ooze creature tokens.
17. Resolve both Carrion Feeder abilities, putting two +1/+1 counters on it.
18. Activate Carrion Feeder twice by sacrificing two Oozes.
19. When the Oozes die, Pitiless Plunderer triggers twice, creating two Treasure artifact tokens.
20. Resolve both Carrion Feeder abilities, putting two +1/+1 counters on it.
21. Activate the seven Treasures by tapping and sacrificing them, adding 4G/W.
22. Repeat.

This clever recursive loop transforms Nethroi, Apex of Death into an explosive engine by leveraging Mitotic Slime's multi-stage dying trigger to generate a cascade of sacrificial fodder. Every creature that hits the dirt is carefully tracked by Pitiless Plunderer, whose passive ability churns out a steady stream of Treasure tokens to fund Nethroi's recurring mutate cost. Meanwhile, Carrion Feeder acts as the designated executioner that grows ever stronger with each cycle, while Eternal Witness ensures Nethroi bounces right back from the graveyard into your hand to start the whole dance over again.