Bog Glider + Dryad Arbor + Intruder Alarm + Conspiracy + Mortuary

Bog Glider

Dryad Arbor

Intruder Alarm

Conspiracy

Mortuary

How it works

1. Activate Bog Glider by tapping it and sacrificing Dryad Arbor.
2. When Dryad Arbor dies, Mortuary triggers, 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 transforming your entire creature base into the Mercenary type via Conspiracy so that Bog Glider can fetch them directly from your library. By sacrificing Dryad Arbor as the cost for Bog Glider's ability, you trigger Mortuary to place Dryad Arbor right back on top of your library where the search can find it again. Every time Dryad Arbor re-enters the battlefield, Intruder Alarm sees the new arrival and untaps all your creatures—including Bog Glider—readying the whole engine to repeat the cycle indefinitely.