How can you create a combo with Urabrask // The Great Work, Clock of Omens, Krark-Clan Ironworks, Contagion Engine?
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[START OF COMBO]This combo can be formed with Urabrask // The Great Work, Clock of Omens, Krark-Clan Ironworks, Contagion Engine

Color identity: R
Mana cost: {4}{R}
Steps:
  1. Activate Urabrask by paying {R}, exiling it and returning it to the battlefield as The Great Work.
  2. As The Great Work enters the battlefield, a lore counter is placed on it.
  3. The Great Work triggers, dealing three damage to an opponent and each creature they control.
  4. Activate Contagion Engine by paying {4} and tapping it, putting two lore counters on The Great Work.
  5. The Great Work's second and third abilities trigger.
  6. Resolve the first Great Work trigger, creating three Treasure tokens.
  7. Resolve the second Great Work trigger, allowing you to cast instants and sorceries from graveyards this turn, and then exiling The Great Work and returning it to the battlefield as Urabrask.
  8. Activate Clock of Omens by tapping two Treasures, untapping Contagion Engine.
  9. Activate Krark-Clan Ironworks twice by sacrificing the two tapped Treasures, adding {C}{C}{C}{C}.
  10. Activate the final Treasure by tapping and sacrificing it, adding {R}.
  11. Repeat.[END OF COMBO STEPS]

Result:
  - Infinite damage
  - Infinite enters the battlefield
  - Infinite leaves the battlefield
  - Infinite proliferate[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - All permanants must be on the battlefield
  - You've cast three or more instants and/or sorceries this turn.
[END OF COMBO PREREQUISITES]
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