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

Color identity: WUBRG
Mana cost: {2}{C}{C} plus enough mana to pay for the Eldrazi spell
Steps:
  1. Cast an Eldrazi from your hand by paying its mana cost.
  2. Ulalek triggers, the Eldrazi cast triggers if it has a cast ability, and Kozilek's Unsealing's first ability triggers.
  3. Holding priority, activate Lithoform Engine's first ability by paying {2} and tapping it, copying Ulalek's trigger.
  4. Resolve the copy of Ulalek's trigger, causing you to pay {C}{C} to copy the Eldrazi spell, Ulalek's trigger, the Eldrazi cast trigger if it had one, and the Kozilek's Unsealing trigger.
  5. Resolve the Eldrazi cast trigger, if applicable.
  6. Resolve the copy of the Kozilek's Unsealing trigger, creating two 0/1 Eldrazi Spawn creature tokens.
  7. Activate both Eldrazi Spawn creature tokens by sacrificing it, adding {C}{C}.
  8. Resolve the copy of Ulalek's trigger from step 4, causing you to pay {C}{C} to copy the Eldrazi spell, Ulalek's trigger, the Eldrazi cast trigger if it had one, and the Kozilek's Unsealing trigger.
  9. Repeat from step 5.[END OF COMBO STEPS]

Result:
  - Infinite copies of abilities you control on the stack
  - Infinite copies of the cast Eldrazi
  - Infinite creature tokens
  - Infinite death triggers
  - Infinite enters the battlefield
  - Infinite leaves the battlefield
  - Infinite sacrifice triggers[END OF COMBO RESULT][END OF COMBO]

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