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Ythryn Expanded Tower of Divination - maps and extra content for Rime of the FrostmaidenClick to magnify

Ythryn Expanded Tower of Divination - maps and extra content for Rime of the Frostmaiden



The Tower of Divination was one of eight towers of magic in the ancient floating Netherese city of Ythryn. Now the tower, along with the city, lies trapped in a frozen tomb. The wizards of this great tower are either long dead or have lost their minds to madness. Yet the tower still holds powerful magic waiting to be tapped.

This supplement is one of several short expansions to the locations in Ythryn with the following objectives:

  • Expand on the Eight Arcane Towers, making each one its own mini-dungeon adventure with exciting challenges and clear direction for the DM.
  • Provide Detailed Maps, for an immersive experience in person or on a virtual tabletop, rather than a brief 'theatre-of-mind' scene.
This supplement presents the events that occur in the Tower of Divination as an alternate to those described on page 243–245 of Icewind Dale: Rime of the Frostmaiden. As always, it is up to you how much of the content you want to use. It's perfectly fine to use some parts of this supplement while discarding others, or simply let the ideas presented here inspire new ideas of your own. This supplement assumes a party of 4–6 characters of 9–11th level.

Adventure Summary: After their arrival at the Tower of Divination, characters will face a few magen guards and encounter strange latent magic in the planetarium, at the base of the tower. This magic will lead to a premonition of an imminent nothic attack. After the characters fight off the nothics, potentially using parts of the planetarium to their advantage, they can continue to the observatory at the top of the tower. In the observatory, characters encounter High Diviner Apius, who has been transformed into a green slaad. Through a peaceful conversation or a search of the tower, the characters will discover that the next line of the Rite of the Octad resides in Apius's missing spellbook. At this point, the characters must decide if they want to risk using a dangerously powerful telescope at the top of the tower to find it.

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Check Out Rogue Watson's Full Written Review or Video Review (Divination at 14:18)!



Save 25% When Buying all Eight Towers! 

Adventure Bundle

See previews for the other towers below.

Abjuration Conjuration Divination Necromancy Evocation Illusion Enchantment Transmutation

Rime of the Frostmaiden Adventure Bundle

Check out my other content for Icewind Dale: Rime of the Frostmaiden.

Adventure Bundle Evermelt

Tomb of Annihilation Complete DM's Bundle

Check out my other content for Tomb of Annihilation in a complete bundle.

Tomb of Annihilation Complete DM's Bundle

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Reviews (1)
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Customer avatar
M C February 01, 2023 9:51 pm UTC
the first of my groups have finally arrived in Ythryn and these alternative versions of the Towers are fantastic. They encountered this particular tower in our latest session and me the enhanced Nothics, oh boy, were they not ready for that. Despite being much higher level (currently 14th) as we've played my own modified version of the story, an ambush by a Preeminent and 5 stalkers severely messed them up before they even entered the tower - Thank you Daniel 3:-)
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File Last Updated:
August 29, 2021
This title was added to our catalog on January 30, 2021.