Bog Glider + Dryad Arbor + Intruder Alarm + Maskwood Nexus + Hua Tuo, Honored Physician

Bog Glider

Dryad Arbor

Intruder Alarm

Maskwood Nexus

Hua Tuo, Honored Physician

How it works

1. Activate Bog Glider by tapping it and sacrificing Dryad Arbor.
2. Holding priority, activate Hua Tuo by tapping it, putting Dryad Arbor on top of your library from your graveyard.
3. Resolve the Bog Glider ability, searching your library for Dryad Arbor and putting it onto the battlefield.
4. When Dryad Arbor enters the battlefield, Intruder Alarm triggers, untapping all creatures.
5. Repeat.

This loop relies on Maskwood Nexus to turn everything into a Mercenary, allowing Bog Glider to tutor Dryad Arbor directly from your library by sacrificing it as a land. Because Dryad Arbor is also a creature, its entry triggers Intruder Alarm to untap all of your creatures, including Bog Glider and Hua Tuo, Honored Physician. Hua Tuo then places the sacrificed Dryad Arbor right back onto the top of your library in response, ensuring it is always available to be found again.