From WoWWiki

The Emblems of Veiled Shadows is a rogue item set earned through quests from the Cenarion Circle which require you to turn in items from creatures and bosses in the Ruins of Ahn'Qiraj. You are also required to have a certain reputation with the Cenarion Circle to get the items. All items in the set are Bind on Pickup and require level 60. The blue quality items in the set (ring and cloak) got upgraded to epic quality in patch 1.11.

Emblems of Veiled Shadows Item Details
Item	Armor	Strength	Agility	Stamina	Other Effects	Reputation Needed
[Band of Veiled Shadows]		11	18	8		Honored
[Cloak of Veiled Shadows]	52		18	11	Improves your chance to hit by 1%.	Revered
[Dagger of Veiled Shadows]		7	15		Improves your chance to hit by 1%.	Exalted

Emblems of Veiled Shadows Armor Totals
Armor	Stats	Resistance	Other Effects
50	Agi: 45 Int: 0 Spi: 0 Sta: 15 Str: 15	Arcane: 0 Fire: 0 Frost: 0 Shadow: 0 Nature: 0	+2% Hit

Bonuses gained from wearing multiple set items:

3: -10 energy cost for your Slice and Dice ability.

External links

Wowhead
Thottbot
Allakhazam

Rogue sets
Dungeon		1: Shadowcraft Armor • 2: Darkmantle Armor 3a: Assassination Armor • 3b: Wastewalker Armor
Reputation		ZG: Madcap's Outfit • AQ20: Emblems of Veiled Shadows • AQ40: Deathdealer's Embrace
Tier (Raid)	1/2/3	Nightslayer Armor • Bloodfang Armor • Bonescythe Armor
	4/5/6	Netherblade • Deathmantle • Slayer's Armor
PvP-	AB	The Highlander's Purpose • The Defiler's Purpose
	Rare	Lieutenant Commander's Guard • Champion's Guard
	Epic	Field Marshal's Vestments • Warlord's Vestments
	Level 70	Grand Marshal's Vestments • High Warlord's Vestments
Arena		1: Gladiator's Vestments • 2: Merciless Gladiator's Vestments • 3: Vengeful Gladiator's Vestments