- A Runestone does not attack directly.
- It creates a field that reduces a minifigure's attack power for a radial distance, but not when adjacent to it, like a Crooked Tooth Defender.
- Has enemy allies: Crooked Tooth Brawler, Crooked Tooth Crusher, Crooked Tooth Piper, Crooked Tooth Hunter.
- In at least one location near a Runestone, stones are flung from catapults at the minifigure.
- It has 692 Health.
- If you pass a Runestone and do not destroy it, it may follow you!
- A Runestone counts as a monster for the Striker achievements.