How can you create a combo with Ulalek, Fused Atrocity, Abstruse Archaic, Writhing Chrysalis?
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[START OF COMBO]This combo can be formed with Ulalek, Fused Atrocity, Abstruse Archaic, Writhing Chrysalis

Color identity: WUBRG
Mana cost: {3}{R}{G}{C}{C}{C}{C}
Steps:
  1. Cast Writhing Chrysalis by paying {2}{R}{G}.
  2. Writhing Chrysalis and Ulalek trigger.
  3. Holding priority, activate Abstruse Archaic by paying {1} and tapping it, copying Ulalek's trigger.
  4. Resolve the copied Ulalek trigger, causing you to pay {C}{C} and creating a copy of the Writhing Chrysalis spell, Writhing Chrysalis's trigger, and Ulalek's trigger.
  5. Resolve the copied Ulalek trigger, causing you to pay {C}{C} and creating a copy of at least two Writhing Chrysalis spells, at least two Writhing Chrysalis's triggers, and Ulalek's trigger.
  6. Resolve a Writhing Chrysalis trigger, creating two Eldrazi Spawn tokens.
  7. Activate two Eldrazi Spawn tokens by sacrificing them, adding {C}{C}.
  8. Repeat from 5 any number of times.
  9. Once you have infinite copies of the spells and triggers, you can resolve them all, activate any number of Eldrazi Spawn tokens, and trigger all Writhing Chrysalis's final abilities.[END OF COMBO STEPS]

Result:
  - Infinite leaves the battlefield
  - Infinite enters the battlefield
  - Infinite sacrifice triggers
  - Infinite death triggers
  - Infinite colorless mana
  - Infinite creature tokens
  - Infinite +1/+1 counters on Writhing Chrysalises[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - Ulalek, Fused Atrocity must be on the battlefield
  - Abstruse Archaic must be on the battlefield
  - Writhing Chrysalis must be in your hand
  - Abtruse Archaic does not have summoning sickness.
[END OF COMBO PREREQUISITES]
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