The Arcane Tower in the southwestern reaches of the Underdark is a marvel of vertical design and environmental storytelling. However, many travelers find their progress halted by a defunct mechanical lift and a series of deadly automated defenses. Restoring power to the bg3 arcane tower elevator is the primary objective for anyone wishing to uncover the research of the cleric Lenore and claim some of the most powerful early-game artifacts in Baldur’s Gate 3.

Bypassing the initial defenses

Approaching the tower requires navigating through the Torchstalk Gulch. As you near the stone entryway, you will be met by two Arcane Turrets. These constructs have high sturdy ratings and will quickly whittle down a party's health if you stand in the open.

There are three primary ways to handle these sentries before you can even reach the elevator:

  1. Lightning Damage: The turrets are vulnerable to lightning. A well-placed Shocking Grasp or a Witch Bolt can disable them temporarily or destroy them if the damage is high enough.
  2. Anti-Magic Field: Sussur Blooms, found near the Sussur Tree to the north of the tower, emit an anti-magic aura. Throwing one near a turret will instantly deactivate it.
  3. Stealth and Cover: Using the turn-based mode allows you to move between the stone pillars and the environment to break line of sight. Fog Cloud or Darkness spells are also highly effective at blinding the turrets.

How to get the bg3 arcane tower elevator moving

The elevator is powered by a large generator located on the ground floor (the basement level). If you enter through the main front doors, the elevator will not respond because the magical current has been severed for years.

Finding the Sussur Bloom

To fix the elevator, you need a Sussur Bloom. While these can be found at the Great Sussur Tree where you complete the masterwork weapon quest, there are actually several growing right behind the Arcane Tower.

Exit to the balcony on the south side of the tower (near the main entrance) and look down. You will see large blue-glowing mushrooms attached to the side of the cliff. Use a Potion of Feather Fall or the Misty Step spell to jump down these fungal platforms until you reach the garden at the very base of the tower. In this small, damp backyard, you will find a tree with glowing blue petals. Pick up at least one Sussur Bloom. Be aware that these blooms prevent the holder from casting spells, so give it to a martial character like Lae'zel or Karlach.

Activating the Generator

Once you have the bloom, look for the back door leading into the tower’s ground floor. It is locked, but a character with high Sleight of Hand can easily pick it. Alternatively, a small creature or a Mage Hand can slip through a hole in the wall to pull the lever from the inside.

Inside the room, you will see a massive mechanical furnace—the Power Generator. Interact with it to open the combine menu, insert the Sussur Bloom, and click 'Combine'. A cutscene will trigger showing the tower's pipes glowing with blue energy. This action restores power to the entire building, lights the braziers, and, most importantly, activates the bg3 arcane tower elevator. It also permanently deactivates all Arcane Turrets within the tower, making exploration safe.

Navigating the floors: A level-by-level guide

With the power restored, the elevator platform in the center of the room is now functional. You can use the buttons on the floor to ascend or descend. Each level of the tower contains specific lore items and loot that are essential for the "Help Omeluum Investigate the Parasite" quest and for understanding the tower's history.

The Greenhouse (First Floor)

This level is filled with botanical experiments. It is the primary location for finding the Timmask Spores and Tongue of Madness mushrooms required by Omeluum in the Myconid Colony.

Key Item: Look for the Threadbare Book on a shelf. Reading this is mandatory if you want to interact peacefully with the guardian at the top of the tower. The book contains the line: "How can I trust? How should I know? How can I show myself, my darkest me?"

The Main Entrance (Second Floor)

This is where you likely first entered. Now that the power is on, you can safely loot the area.

Key Item: On the northern balcony, you will find the Chest of the Mundane. This famous chest initially appears to contain nothing but cups and plates. However, these are illusions. By moving the items to your inventory or bringing a Sussur Bloom near the chest, they revert to their true forms: scrolls, gold, and the Mystra's Grace boots, which allow the wearer to cast Feather Fall.

The Bedroom (Third Floor)

This floor provides the most insight into Lenore’s life. It contains several journals and letters.

Key Items:

  • The Roads to Darkness: A book on a desk containing the line: "Or art thou friend, a rescue from my lonely wake?"
  • Torn-out Paper: Found near the bed, containing the line: "The silence stretches on—I’m all alone."
  • The Careful Art of Tir'su Ciphers: Essential for deciphering Githyanki discs if Lae'zel is not present.

The Roof (Fourth Floor)

This is the final destination for the bg3 arcane tower elevator. Upon stepping off the lift, you will be confronted by Bernard, a large magical automaton. Unless you have read the poetry found on the lower floors, Bernard will view you as an intruder and attack with several smaller animated armors.

Interacting with Bernard through Poetry

Bernard is programmed to respond to specific lines from the plays and poems scattered throughout the tower. If you initiate the conversation with the correct lines, he will treat you as his master (Lenore).

  • To avoid combat: Choose "Or art thou friend, a rescue from my lonely wake?" (from The Roads to Darkness).
  • To get the Guiding Light ring: Choose "How can I trust? How shall I know? / How can I show myself, my darkest me?" (from the Threadbare Book). Bernard will walk over to a table and place the ring there for you.
  • To get a hug: Choose "The silence stretches on—I'm all alone." This results in a poignant moment where the robot attempts to comfort the player.
  • To receive a Potion of Greater Healing: Choose "These empty sheets are all that's left of you."
  • To initiate combat: Choose "There is a light in every living thing."

Fighting Bernard is challenging because he has high resistance to most physical damage and deals significant lightning damage. If you choose to fight, use the Sussur Bloom to weaken him or use the environment to push his constructs off the roof.

Unlocking the secret basement

Many players think the generator room is the "basement," but there is a hidden, even lower level containing the tower's true treasures. There are two ways to access this secret area once the bg3 arcane tower elevator is powered.

Method 1: The Guiding Light Ring

Once you obtain the Guiding Light ring from Bernard (either by reciting the poem or looting his body), equip it. While wearing the ring, stand on the elevator. A new, hidden button will appear on the floor's interface. Pressing this button will take the elevator down to a secret floor that was previously inaccessible.

Method 2: The Hidden Lever

If you do not want to use the ring, you can find a lever on the top floor hidden behind some furniture and a successful Perception check. Pulling this lever opens a mechanical gate at the very bottom of the tower, allowing you to walk into the secret basement from the generator room.

What is in the secret basement?

The secret basement is a goldmine for casters.

  1. Staff of Arcane Blessing: This is arguably the best staff for a Cleric or Wizard in Act 1. It provides a massive buff to the Bless spell, granting an additional 1d4 to attack rolls and saving throws, and an extra 2d4 to spell attack rolls. This makes your party significantly more accurate in combat.
  2. The Sparkswall: A ring that makes the wearer immune to Electrocuted and resistant to Lightning damage—perfect for the upcoming encounters in the Grymforge.
  3. De Hurst's Diary: Provides deeper lore regarding Lenore’s disappearance and her connection to the wizarding community.

Optimal party strategy for the Arcane Tower

To make the most of your visit to the Arcane Tower, consider the following party composition and preparation:

  • The Rogue (Astarion): Essential for picking the lock on the generator door and disarming any traps you might find in the cluttered laboratory.
  • The Scholar (Gale/High Intelligence character): Many of the books and items in the tower require Arcana or History checks to fully understand. Decoding the Githyanki disc found on the bedroom floor is much easier with a high Intelligence stat.
  • Utility Spells: Ensure someone has Misty Step, Feather Fall, or Enhanced Leap. The verticality of the tower means you can often bypass turrets by simply jumping to different balconies.

Environmental Storytelling: Who was Lenore?

As you ride the bg3 arcane tower elevator between floors, take the time to read the notes. The tower belonged to Lenore de Hurst, a Cleric of Mystra. The environmental cues—the dog's bowl in the bedroom, the letters to a friend named Yrre, and the lonely automaton on the roof—tell a story of a woman who was brilliant but deeply isolated.

There is a button near the bedroom window that, when pressed, does nothing. However, if you have the Dog Collar found in a grave in the Dread Hollow (near the Sussur Tree), you can equip it and press the button to receive a piece of raw steak. This suggests Lenore had a loyal companion named Myrna, whose loss she mourned deeply. These small details are what make the Arcane Tower one of the most memorable locations in the Underdark.

Troubleshooting the elevator

Occasionally, players may find that the elevator UI becomes unresponsive. If the buttons do not appear even after inserting the Sussur Bloom, try the following:

  • Check the Power: Ensure the blue lines on the floor are glowing. If they are not, the generator did not successfully consume the bloom.
  • Character Positioning: Sometimes the elevator requires all party members to be standing firmly on the platform before the floor buttons become interactable.
  • Long Rest: If a glitch occurs, leaving the tower for a long rest and returning often resets the environmental state and fixes the UI.

In conclusion, the bg3 arcane tower elevator is more than just a means of transport; it is the key to a multi-layered puzzle that rewards patient exploration and attention to detail. From the anti-magic properties of the Sussur Blooms to the melancholic poetry of Bernard, every element of the tower serves a purpose. By following this guide, you can ensure that you leave the tower with every piece of high-tier loot and a full understanding of the secrets hidden within its walls.