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The Arcane Tower is a location in Act One. It is located in the Underdark, overlooking the Ebonlake. It used to belong to Lenore.
| Underdark | ||||
| Decrepit Village | ||||
| ↑ | ||||
| Arcane Tower | → | Selûnite Outpost | ||
Locations
Arcane Tower
Approaching the Arcane Tower is made difficult by the Arcane Cannons protecting it.
The area is divided roughly into the entry area, each floor of the tower, and the garden outside the bottom floor. Upon initial approach, the doors are shut and the central elevator is disabled, and floors must be accessed through other means including spells such as fly, jumping through broken windows, from balconies, and onto mushrooms.
Once the generator is powered, the arcane cannons power down, the arcane braziers become lit, and the elevator can be used to ascend and descend between the floors.
| Level | How to Access | Notable Elements |
|---|---|---|
 4th Floor (Roof)
|
Can be reached by the elevator and/or flight. | This level contains Bernard, and the  Guiding Light ring which is one method to visit the basement.
|
| 3rd Floor (Main Entrance)
|
Can be reached by the elevator and/or flight. | Contains key elements that allows the player to converse with Bernard and other constructs peacefully. |
| 2nd Floor (Main Entrance)
|
Can be accessed by the Main Door. Or flight and elevator if approaching from another level. | Contains the Chest of Mundane ( Mystra's Grace + two Scrolls) and 2x Arcane Cannons.
|
| 1st Floor (Greenhouse)
|
Can be reached by the elevator, flight, or by jumping or teleporting on the mushrooms on the tower exterior. | Contains the quest related items (Tongue of Madness, Timmask Spores). If the player does not wish to explore the rest of the tower, they only have to visit this one floor. |
| Ground floor (Generator)
|
The exterior Garden can be access by flight, jumping or teleporting on outside the tower. The locked 1st floor itself can be accessed by the Back Door or a Hole on the wall. | Contains the generator that allows you to restore power to the tower. The elevator itself is located on a mezzanine, with the rest of the basement beneath it. |
| Basement (Secret Room)
|
Can reach through elevator with the Guiding Light ring equipped, or by flying through a gap from the 1st level, or by using [Mage Hand] to activate a lever under the staircase.
|
Contains treasures - including the  Staff of Arcane Blessing,  the Sparkswall, and another set of the quest items (Tongue of Madness, Timmask Spores).
|
Torchstalk Gulch
To the east of the tower, this unnamed area of the Underdark has deep red mushroom clusters and spots of Torchstalk that cast floating embers into the air. The corpse of an unfortunate Drow can be found, having been killed by an unexpected fall.
The party can climb mushrooms along the wall to reach an upper level. Some of these mushrooms will be illusions that will de-materialise when stepped on or discovered with a 
DC 10 Investigation check. There are also two mushroom circles, on the upper level and below. These connect to each other, until the circle in the Overgrown Tunnel is used.
On the upper level is an illusory wall which leads to another mushroom circle, connected to the circle outside the Riverside Teahouse.
Festering Cove
The Festering Cove is a partially hidden location on a separate Underdark map, containing the Kuo-toa worshipping their god, BOOOAL. It can be reached by climbing down the cragged rock in Torchstalk Gulch X: 80 Y: -241.
Notable characters
Creatures
Related quests
Notable loot
Notable items obtained in this location, whether looted, purchased, or obtained as a quest reward:
Skybreaker inside a locked chest in-front of the tower X: 27 Y: 298
Light of Creation looted from Bernard (can also use 
)
Club of Hill Giant Strength break the Stool of Hill Giant Strength on the 4th floor of the tower
Guiding Light looted or gifted from Bernard after using the appropriate play line
Mage's Friend in a chest on the 4th floor
Staff of Arcane Blessing tower basement
The Sparkswall tower basement
Uncovered Mysteries tower basement
Chest of the Mundane
The Chest of the Mundane appears to contain worthless mundane items. If they are removed, or are in proximity to a Sussur Bloom, the enchantment fails, and instead the items can be seen to be 
Mystra's Grace and some randomized loot, including two scrolls.
Notes and trivia
- The Arcane Cannons and Animated Armours can be disabled by a Sussur Bloom, whether it is placed near them, or held by a nearby character.
- If line-of-sight of the Arcane Cannons is broken, such as by using a
spell, they will be unable to fire.
