HEVNORAAK
- Calm

MOROKEI
- Changed percent regen to a point value.
- Absorbs Magicka
- Prevents stagger when casting Ritual Spells

NAHKRIIN
- Touch and Place Spells have Longer Reach
- Destruction Spells are three times more powerful
- Restoration Spells are three times more powerful

OTAR
- Fury

VOKUN
- More HP for conjured creatures
- Only Mask with Fortify and Amplify Alteration

VOLSUNG
- Faster movement speed.
- Made for Silvertongues

KROSIS
- Only DB Mask suitable for Thieves

AHZIDAL, ZAHKRIISOS and DUKAAN
- Immunity unless spell resistance is lowered by any means such as debuffs and poisons.

RAHGOT
- Only DB Mask suitable for 2H Warriors.

MIRAAK AND KONAHRIK
- None. I recommend Zim's Immersive Artifacts and Konahrik's Privilege.