Ahzidal's Ring of Arcana is a unique piece of enchanted jewelry found in The Elder Scrolls V: Dragonborn.
Locations
It can be found in Kolbjorn Barrow during the third investment stage of the quest "Unearthed."
Acquisition
Find a room with tiles located on the floor. Run over all of the pressure plates until they are all lit up. This will open the gate. The ring is on a pedestal inside the room where the gate opened up.
Enchantment
"Allows you to cast the spells Ignite and Freeze."
Wearing the ring grants two new Destruction spells, Ignite and Freeze. The spells are only available if the ring is worn.
Trivia
- Followers wearing the ring can possibly be able to use the spells ignite and freeze, even though they are not naturally spellcasters.
- This might be a reference to Morrowind's enchanting system, in which you could have used ring to cast spells.