How can you create a combo with Rooftop Storm, Mortuary, Realmwalker, Skull Skaab?
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[START OF COMBO]This combo can be formed with Rooftop Storm, Mortuary, Realmwalker, Skull Skaab

Color identity: BGU
Mana cost: 
Steps:
  1. Cast Skull Skaab either from your hand or from the top of your library by paying {0}.
  2. When Skull Skaab enters the battlefield, its exploit ability triggers, causing you to sacrifice it.
  3. When Skull Skaab dies, Mortuary triggers, putting it on top of your library from your graveyard.
  4. Repeat.[END OF COMBO STEPS]

Result:
  - 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:
  - Rooftop Storm must be on the battlefield
  - Mortuary must be on the battlefield
  - Realmwalker must be on the battlefield
  - Skull Skaab must be in your hand or in the library
  - "Zombie" chosen with Realmwalker.
[END OF COMBO PREREQUISITES]
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