Bog Glider + Dryad Arbor + Intruder Alarm + Arcane Adaptation + Hua Tuo, Honored Physician

Bog Glider

Dryad Arbor

Intruder Alarm

Arcane Adaptation

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 clever loop relies on Arcane Adaptation to bridge a crucial type gap, naming "Mercenary" so that every creature you control matches the search criteria of Bog Glider. You sacrifice Dryad Arbor to Bog Glider's activated ability, immediately floating it back to the top of your library with Hua Tuo, Honored Physician before the search resolves. When Dryad Arbor hits the battlefield as a land-creature, Intruder Alarm triggers to untap all your creatures—including Bog Glider and Hua Tuo—readying them to repeat the cycle infinitely.