How can you create a combo with Eternal Scourge, Ashnod's Altar, Unscythe, Killer of Kings, Marauding Raptor?
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[START OF COMBO]This combo can be formed with Eternal Scourge, Ashnod's Altar, Unscythe, Killer of Kings, Marauding Raptor

Color identity: UBR
Mana cost: {2}
Steps:
  1. Cast Eternal Scourge either from your hand or from exile by paying {2}.
  2. When Eternal Scourge enters the battlefield, Marauding Raptor triggers, dealing 2 damage to Eternal Scourge.
  3. Activate Ashnod's Altar by sacrificing Eternal Scourge, adding {C}{C}.
  4. When Eternal Scourge dies, Unscythe triggers, exiling Eternal Scourge and creating a 2/2 Zombie creature token.
  5. When the Zombie enters the battlefield, Marauding Raptor triggers.
  6. Holding priority, activate Ashnod's Altar by sacrificing the Zombie, adding {C}{C}.
  7. When the Zombie dies, Unscythe triggers, failing to exile the Zombie as it no longer exists.
  8. Resolve the Marauding Raptor trigger, doing nothing as the Zombie is no longer on the battlefield.
  9. Repeat.[END OF COMBO STEPS]

Result:
  - Infinite colorless mana
  - Infinite death triggers
  - Infinite enters the battlefield
  - Infinite leaves the battlefield
  - Infinite sacrifice triggers
  - Infinite storm count[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - Eternal Scourge must be in your hand or exiled
  - Ashnod's Altar must be on the battlefield
  - Unscythe, Killer of Kings must be on the battlefield
  - Marauding Raptor must be on the battlefield
  - Unscythe attached to Marauding Raptor.
[END OF COMBO PREREQUISITES]
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