How can you create a combo with Summon the School, Intruder Alarm, Cryptolith Rite?
user
[START OF COMBO]This combo can be formed with Summon the School, Intruder Alarm, Cryptolith Rite

Color identity: GWU
Mana cost: {1} if you control exactly three Merfolk
Steps:
  1. Activate at least three Merfolk you control by tapping them, adding at least {2}{W}.
  2. Cast Summon the School by paying {3}{W}, creating two 1/1 Merfolk Wizard creature tokens.
  3. When the Merfolk Wizards enter the battlefield, Intruder Alarm triggers twice.
  4. Resolve the first trigger, untapping all creatures.
  5. Activate at least three Merfolk you control by tapping them, adding at least {2}{W}.
  6. Resolve the second Intruder Alarm trigger, untapping all creatures.
  7. If needed or desired, activate a Merfolk you control by tapping it, adding {1}.
  8. Activate Summon the School by tapping four untapped Merfolk you control, returning Summon the School from your graveyard to your hand.
  9. Repeat from step 2.
  10. If you control four or more Merfolk that does not have summoning sickness, this combo nets infinite colored mana.[END OF COMBO STEPS]

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

Other prerequisites:
  - Summon the School must be in your hand
  - Intruder Alarm must be on the battlefield
  - Cryptolith Rite must be on the battlefield
  - You control at least three Merfolk without summoning sickness.
[END OF COMBO PREREQUISITES]
assistant