How can you create a combo with Ulalek, Fused Atrocity, Annie Joins Up, Kozilek's Unsealing?
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[START OF COMBO]This combo can be formed with Ulalek, Fused Atrocity, Annie Joins Up, Kozilek's Unsealing

Color identity: WUBRG
Mana cost: {C}{C} plus enough mana to pay for the Eldrazi spell
Steps:
  1. Cast an Eldrazi with mana value 4, 5 or 6 from your hand by paying its mana cost.
  2. Ulalek triggers twice, and Kozilek's Unsealing's first ability triggers once. The Eldrazi cast also triggers if it has a cast ability.
  3. Resolve the first Ulalek's trigger, causing you to pay {C}{C} to copy the Eldrazi spell, Ulalek's trigger, Kozilek's Unsealing's trigger, and the Eldrazi cast trigger if it had one.
  4. Resolve the Eldrazi cast trigger, if applicable.
  5. Resolve the Kozilek's Unsealing trigger, creating two 0/1 Eldrazi Spawn creature tokens.
  6. Holding priority, activate the two Eldrazi Spawns by sacrificing them, adding {C}{C}.
  7. Resolve the copy of Ulalek's trigger from step 3, causing you to pay {C}{C} to copy the Eldrazi spell, Ulalek's trigger, Kozilek's Unsealing's trigger, and the Eldrazi cast trigger if it had one.
  8. Repeat from step 4.[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 copies of abilities you control on the stack
  - Infinite copies of the cast Eldrazi[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - All permanants must be on the battlefield
[END OF COMBO PREREQUISITES]
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