The Nightingale set was the one most disappointing set in Skyrim, as if it didn't quite know what it wanted to be, This mod changes that so the entire set is oriented towards a cloak and dagger assassin. (if your more interested in a Bow oriented set check out my other mod http://skyrim.nexusmods.com/mods/20822 )

Nightingale Hood - all versions now have 46+ version stats.
-Water breathing.
-Illusion spells cost 20% less to cast.
-Prices are 10% better.

Nightingale Armor - all versions now have 46+ version stats.
- Increase your stamina by 50 points.
- Increase Poison Resistance by 100%
- Increase Frost Resistance by 50%

Nightingale Gloves - all versions now have 46+ version stats.
- 25% easier lockpicking
- 25% more pickpocket success
- Double sneak attack damage with one handed weapons

Nightingale Boots - all versions now have 46+ version stats.
- 35.00 Muffle strength

Nightingale Sword - all versions now have 46+ version stats.

->NEW ITEM-
Shadow Fiends Ring
- You are able to move more quietly, and opponents that get too close take 5 points poison damage per second.

the ring is located in a barrel outside of the grey-mane family home.