Cryptolith Rite + Intruder Alarm + Summon the School

Mana needed: {1} if you control exactly three Merfolk

GWU identity

Commander legal

The 3 combo pieces

What must be in place

You control at least three Merfolk without summoning sickness.

How to execute it

  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.

What the combo produces