Hadronox

Hadronox is the second boss of Azjol-Nerub, an instance in the Dragonblight. When encountered, the Anub'ar are attacking him as the players enter the room. It seems like the Scourge forces here are trying to catch the huge spider and perhaps convert it to an undead to use as a weapon, similar to Maexxna in Naxxramas.

Abilities:

• Every time Hadronox kills a player or attacking Mob, he re-gains health.
• Occasionally casts spider silk tethers, drawing all players (and attacking Mobs) to itself.
• Will occasionally web a player, immobilizing them.
• Leech Poison - AOE Poison Effect. Does 500-600 dmg per tick, heals Hadronox for the amount damaged. Healing done to those with poison also heals the boss.
• Acid Cloud - Decreases armor (sunder)

Loot Items:

Normal Mode

Life-Staff of the Web Lair
Binds when picked up
Staff
Two-Hand
Speed 2.40
100 - 151 Damage
(52.2 damage per second)
+113 Stamina
+60 Spirit
Durability 100 / 100
Requires Level 72
Item Level 163
Equip: Increases spell power by 316.

Spinneret Epaulets
Binds when picked up
Leather
Shoulder
628 Armor
+65 Stamina
+33 Intellect
+35 Spirit
Durability 80 / 80
Requires Level 72
Item Level 163
Equip: Increases spell power by 39.

Treads of Aspiring Heights
Binds when picked up
Leather
Feet
576 Armor
+45 Agility
+68 Stamina
Durability 65 / 65
Requires Level 72
Item Level 163
Equip: Improves critical strike rating by 23.


Heroic Mode


Grotto Mist Gloves
Binds when picked up
Leather
Hands
665 Armor
+73 Stamina
+50 Intellect
+59 Spirit
Red Socket
Socket Bonus: +4 Spirit
Durability 45 / 45
Requires Level 80
Item Level 200

Egg Sac Robes
Binds when picked up
Cloth
Chest
780 Armor
+114 Stamina
+62 Intellect
Red Socket
Yellow Socket
Socket Bonus: +6 Intellect
Durability 135 / 135
Requires Level 80
Item Level 200
Equip: Increases your haste rating by 62.

Hollowed Mandible Legplates
Binds when picked up
Mail
Legs
1386 Armor
+62 Agility
+90 Stamina
Red Socket
Red Socket
Socket Bonus: +6 Haste Rating
Durability 100 / 100
Requires Level 80
Item Level 200
Equip: Increases your critical strike rating by 62.
Equip: Increases your haste rating by 41.

Essence of Gossamer
Binds when picked up
Unique-Equipped
Trinket
+111 Stamina
Requires Level 80
Item Level 200
Equip: When struck in combat has a chance of shielding you in a protective barrier which will reduces damage from each attack by 140, up to a total of 4000 damage absorbed. Lasts 10 secs.


Source: Wowwiki