How can you create a combo with Aether Storm, Avacyn's Memorial, Leyline of Singularity?
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[START OF COMBO]This combo can be formed with Aether Storm, Avacyn's Memorial, Leyline of Singularity

Color identity: WU
Mana cost: 
Steps:
  1. Aether Storm prevents any player from casting creature spells.
  2. Avacyn's Memorial prevents Aether Storm from being destroyed due to its ability.[END OF COMBO STEPS]

Result:
  - Players cannot cast creature spells[END OF COMBO RESULT][END OF COMBO]

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