ESO: how to unlock Mages Guild skill line?
The only method to “unlock” the Mage’s guild skill line is to find the Mage’s Guildhall (available in the first major city of each starter zone) and there will be an NPC outside ready to help you join.
- Vulkhel Guard in Auridon (for Aldmeri Dominion)
- Davon’s Watch in Stonefalls (for the Ebonheart Pact)
- Daggerfall in Glenumbra (for the Daggerfall Covenant)
You can learn how to level up the Mage’s Guild skill line here.