How can you create a combo with Inalla, Archmage Ritualist, Spellseeker, Culling the Weak, Shallow Grave, Burnt Offering, Finale of Promise, Reanimate, Entomb, Archaeomancer, Unearth?
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[START OF COMBO]This combo can be formed with Inalla, Archmage Ritualist, Spellseeker, Culling the Weak, Shallow Grave, Burnt Offering, Finale of Promise, Reanimate, Entomb, Archaeomancer, Unearth

Color identity: UBR
Mana cost: {2}{U}{B}
Steps:
  1. Cast Spellseeker, stacking Inalla's trigger under Spellseeker's ETB trigger.
  2. Tutor Culling the Weak to hand with Spellseeker's ability.
  3. Cast Culling the Weak, sacrificing Spellseeker and adding {B}{B}{B}{B}.
  4. Resolve and pay for the Inalla trigger from earlier, creating a token copy of Spellseeker and leaving {B}{B}{B} floating.
  5. When the token ETBs, tutor Unearth to your hand.
  6. Unearth Spellseeker, leaving {B}{B} floating.
  7. Shortcut resolving both Inalla's trigger and Spellseeker's ETB, tutoring for Burnt Offering and Finale of Promise, leaving {B} floating.
  8. Cast Burnt Offering, sacrificing Spellseeker and adding {B}{R}{R}.
  9. Use that mana to cast Finale of Promise with X=1 targeting Unearth and Culling the Weak.
  10. Sacrifice a Spellseeker token to Culling the Weak for {B}{B}{B}{B} and Unearth Spellseeker.
  11. Resolve Spellseeker's ETB and Inalla's trigger, tutoring Entomb and Reanimate into hand.
  12. Entomb and then Reanimate Archaeomancer, leaving {B} floating.
  13. Resolve Archaeomancer's ETB, returning Burnt Offering from your graveyard to your hand.
  14. Cast Burnt Offering on Archaeomancer, adding {B}{B}{B}{B}.
  15. Resolve the Inalla trigger from when Archaeomancer ETB'd and return Reanimate to your hand, leaving {B}{B}{B} floating.
  16. Reanimate Archaeomancer and resolve the Inalla trigger, retrieving Burnt Offering and FInale of promise, {B} floating.
  17. Sacrifice Archaeomancer to Burnt Offering, adding {R}{R}{B}{B}.
  18. Cast FInale of Promise with X=1 targeting Entomb and Reanimate.
  19. Entomb Shallow Grave and Reanimate Archaeomancer, {B} floating.
  20. Resolve the Archaeomancer trigger returning Burnt Offering from your graveyard to your hand.
  21. Sacrifice Archaeomancer to Burnt Offering, adding {B}{B}{B}{B}.
  22. Resolve the Inalla trigger, making a token copy of Archaeomancer with haste and leaving {B}{B}{B} floating.
  23. Return Shallow Grave with the token copy's ETB.
  24. Cast Shallow Grave targeting Archaeomancer, leaving {B} floating.
  25. Repeat steps 20-24 for infinite hasty Archaeomancers.[END OF COMBO STEPS]

Result:
  - Infinite creature tokens with haste (1/2 Archaeomancers)
  - Infinite death triggers
  - Infinite enters the battlefield
  - Infinite leaves the battlefield
  - Infinite sacrifice triggers[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - Inalla, Archmage Ritualist must be on the battlefield or in the command zone
  - Spellseeker must be in your hand
  - Culling the Weak must be in your hand or in the library
  - Shallow Grave must be in your hand or in the library
  - Burnt Offering must be in your hand or in the library
  - Finale of Promise must be in your hand or in the library
  - Reanimate must be in your hand or in the library
  - Entomb must be in your hand or in the library
  - Archaeomancer must be in the library
  - Unearth must be in your hand or in the library
  - Your life total is at least 13 life.
[END OF COMBO PREREQUISITES]
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