Warren Soultrader + Seedship Broodtender + Reveillark + Boss's Chauffeur + Vein Ripper

Warren Soultrader

Seedship Broodtender

Reveillark

Boss's Chauffeur

Vein Ripper

How it works

1. Activate Warren Soultrader by paying 1 life and sacrificing Reveillark.
2. When Reveillark dies, it and Vein Ripper trigger.
3. Resolve the Vein Ripper trigger, causing you to gain 2 life and target opponent to lose 2 life.
4. Resolve the Reveillark trigger, returning Seedship Broodtender and Boss's Chauffeur from your graveyard to the battlefield. Boss's Chauffeur will enter with a +1/+1 counter on it equal to the number of creatures you control.
5. When Seedship Broodtender enters, it and Boss's Chauffeur trigger, causing you to mill three cards and put a +1/+1 counter on Boss's Chauffeur.
6. Resolve the Warren Soultrader ability, creating a Treasure token.
7. Activate Warren Soultrader by paying 1 life and sacrificing Boss's Chauffeur.
8. When Boss's Chauffeur dies, it and Vein Ripper trigger.
9. Resolve the Vein Ripper trigger, causing you to gain 2 life and target opponent to lose 2 life.
10. Resolve the Boss's Chauffeur trigger, creating a 1/1 Citizen creature token for each +1/+1 counter on it.
11. Resolve the Warren Soultrader ability, creating a Treasure token.
12. Activate Warren Soultrader by paying 1 life and sacrificing a Citizen.
13. When the Citizen dies, Vein Ripper triggers, causing you to gain 1 life and target opponent to lose 1 life.
14. Resolve the Warren Soultrader ability, creating a Treasure token.
15. Repeat from step 12 two additional times.
16. Activate five Treasures by tapping and sacrificing them, adding 3.
17. Activate Seedship Broodtender by paying 3 and sacrificing it.
18. When Seedship Broodtender dies, Vein Ripper triggers, causing you to gain 2 life and target opponent to lose 2 life.
19. Resolve the Seedship Broodtender ability, returning Reveillark from your graveyard to the battlefield.
20. Repeat.

This intricate loop sets up an absolute engine of sacrifice and resurrection, anchored by the life-draining presence of Vein Ripper to turn every death into a lethal blow to your opponents. Warren Soultrader acts as the primary sacrificial outlet, feeding your graveyard while generating Treasures that help fund the recursion costs. Meanwhile, Reveillark and Seedship Broodtender pass creatures back and forth from the graveyard to the battlefield, with Seedship Broodtender's own sacrifice ability bridging the gap to bring Reveillark back home. Finally, Boss's Chauffeur enters and leaves the battlefield alongside these loops to harvest counters and flood the board with Citizen tokens, keeping the sacrifice fodder flowing infinitely.