Intruder Alarm + Stonybrook Schoolmaster + Sand Squid

Intruder Alarm

Stonybrook Schoolmaster

Sand Squid

How it works

1. Activate Sand Squid by tapping it, tapping Stonybrook Schoolmaster.
2. Stonybrook Schoolmaster triggers, creating a 1/1 Merfolk Wizard creature token.
3. When the Merfolk Wizard enters the battlefield, Intruder Alarm triggers, untapping all creatures.
4. Repeat.

This charmingly quirky loop relies on Intruder Alarm to turn every newly born creature into a global untapping switch for your board. By using Sand Squid's activation to tap Stonybrook Schoolmaster, you trigger the Schoolmaster to produce a Merfolk Wizard token, which in turn wakes up the entire battlefield via the Alarm. Because Sand Squid and the Schoolmaster both untap in the process, you are free to repeat the tapping back and forth as many times as your heart desires.