Zhaken Amberhart is the master of Adamntis Tower.  The tower is a structure but is also somewhat of a vehicle.  Amberhart can call the tower at will to a location of his choosing so long as the location is relatively free of obstructions and completely free of other structures.  Adamantis tower is an otherworldly creation with links to the far realm, it is has something of a will of its own, though this is in tune with the current master of the tower.  It is unknown how one masters the tower.

Lair Actions

When fighting inside Adamantis Tower, Amberhart can use lair actions. On initiative count 20 (losing initiative ties), he can take one lair action to cause one of the following effects; he can’t use the same lair action two rounds in a row:

• Change Places: The tower warps space around its inhabitants, causing up to 6 creatures to change places with each other.  Any creature can end up occupying the space of any other creature affected.
• Shudder: The tower trembles violently for a moment. Each creature on the floor of the tomb must succeed on a DC 19 Dexterity saving throw or be knocked prone.
• Unweave: The tower targets one creature it can see within 60 feet of it. An antimagic field fills the space of the target, moving with it until initiative count 20 on the next round.
• Convergent Environtment: The tower is able to call on the latent energies of its environment to generate a powerful magical storm at its top level.  This changes based on the environment in which the tower is currently located.  In cold, icy environments, this manifests as a sleet storm.  This lasts for one minute and cannot be cancelled except through magical means.  If dispel magic or a similar spell is cast on the tower to cancel the effect, Convergent Environment is treated as a 4th level spell.  The master of Adamantis Tower is unaffected by this.