Summon the School + Intruder Alarm + Cryptolith Rite

Summon the School

Intruder Alarm

Cryptolith Rite

How it works

1. Activate at least three Merfolk you control by tapping them, adding at least 2.
2. Cast Summon the School by paying 3, 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.
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.

This looping marvel turns your Merfolk squad into a self-sustaining engine by weaving together casting costs, graveyard recursion, and untap mechanics. Cryptolith Rite grants your entire board the ability to tap for mana, transforming every creature into a makeshift land. When you cast Summon the School, the new Merfolk Wizard tokens enter the battlefield and trigger Intruder Alarm twice, untapping your creatures to let you retap them for mana and fuel the next iteration. Finally, once you have enough bodies, the activated ability of Summon the School lets you pluck the card right back out of your graveyard for four tapped Merfolk so you can cast it all over again.