How to get the Wolven armor in The Witcher 3

The Wolven armor diagrams in The Witcher 3 are found at the old signal tower just south of Kaer Morhen keep, with a level 14 requirement and plenty of wraiths to fight along the way. Activate the teleportation crystals with Aard to open a portal and loot the diagrams from a corpse in the cave. Enhanced, superior, and mastercrafted upgrade diagrams are unlocked by buying notes from Éibhear Hattori in Novigrad, Lindenvale's armorer, and Kaer Trolde's armorer.