From DDO wiki
Monster Manual classification: Unknown
Organization: Four at each tower
Attack: It's an Inanimate Object, it can't even move, let alone attackHabitats:
- Litany of the Dead — After defeating one of the bosses in Litany, you must proceed and exit to Orchard, where you will appear on the top of the tower that control the boss you just defeated. Break all four crystals to release the boss from the Black Abbot's influence.
- Mining for Ancient Secrets — There are two red-named crystals powering a force barrier over the Aspect Crystal.