In PTS v9.3.0, Expert Summoner no longer requires a Daedric Summoning ability to be active, and it now increases Health by 10% while a pet is active, or increases Magicka and Stamina by 10% otherwise — which applies to Pack Leader and Werewolf Berserker, respectively.
This is the first passive of its kind to interact with the morphs of Werewolf Transformation in a unique way — Werewolf Berserker gains the +10% Maximum Magicka and Maximum Stamina, while Pack Leader (due to its dire wolves) gains the +10% Maximum Health instead. This is fantastic news for both PvE and PvP Werewolf builds, as Werewolf in PvE primarily uses the Werewolf Berserker morph and stacks Maximum Stamina, while Werewolf in PvP generally uses the Pack Leader morph and stacks Maximum Health.
I wish there were more passives which interacted with the different morphs of Werewolf Transformation in such a unique way. Hopefully the developer team sees this change as a positive thing and decides to make similar changes to diversify each Class's Werewolf playstyle.
PC/NA — Lone Werewolf, the Templar Khajiit Werewolf
Werewolf Should be Allowed to Sneak
Please give us Werewolf
Skill Styles (for customizing our fur color),
Grimoires/Scribing skills (to fill in the holes in our builds), and
Companions (to transform with).