How to get there: In the southern inland of Wizard's Island, reached by the central path from its northern beach.
The ground gate hall leads to the Obsidian Alchemical Hall, The Umbral Archives and Nightglass Observatory. Wide galleries, side rooms, cauldrons and bookshelves give each floor its own identity.
Obsidian Wizards are strong ordinary creatures, with independent three-minute respawns. Hit during their glowing staff charge or move behind stone cover to interrupt it. Their healing chants can also be broken. They do not summon apprentices or award boss rewards.
There are no protection zones inside. Screened stair landings provide cover, and the stairs can be used to retreat during combat after dismounting. The older island study groves, Azure Grotto and its castle keep their original entrances and routes.