How can you create a combo with Intruder Alarm, Stonybrook Schoolmaster, Opposition?
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[START OF COMBO]This combo can be formed with Intruder Alarm, Stonybrook Schoolmaster, Opposition

Color identity: WU
Mana cost: 
Steps:
  1. Activate Opposition by tapping Stonybrook Schoolmaster, targeting Stonybrook Schoolmaster.
  2. Stonybrook Schoolmaster triggers, creating a 1/1 Merfolk Wizard creature token.
  3. The Merfolk Wizard enters the battlefield, triggering Intruder Alarm, untapping all creatures.
  4. Resolve the Opposition ability, tapping Stonybrook Schoolmaster.
  5. Stonybrook Schoolmaster triggers, creating a 1/1 Merfolk Wizard creature token.
  6. The Merfolk Wizard enters the battlefield, triggering Intruder Alarm, untapping all creatures.
  7. Repeat.[END OF COMBO STEPS]

Result:
  - Infinite creature tokens
  - Infinite enters the battlefield
  - Infinite mana creatures you control can produce
  - Infinite untap of all creatures[END OF COMBO RESULT][END OF COMBO]

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