Thorim Boss Abilities
Health Points: 11,300,000 (heroic)
Stormhammer - deals 2,451-2,551 damage, knocking down and stunning for 2 seconds. Causes deafening thunder to all nearby enemies.
Defeaning Thunder - inflicts 4,625-5,375 nature damage to enemies in close proximity of a stormhamer. Silences for 6 seconds
Beserk - Increases damage by 500%, attack / cast speed by 200% and health by 300% of Thorim and his allies.
Unbalancing Strike - Deals 250% weapon damage and leaves the target unbalanced, reducing defense by 200 for 15 seconds
Lightning Charge - absorbs energy from a target, deals nature damage to all enemies in a frontal cone between caster and the targeted enemy. Increases the caster’s melee damage / attack speed by 20%.
Gauntlet Mobs and Abilities
Jormungar Behemoth
Acid Breath - deals 12,000 nature damage and 1500 additional damage every 2 seconds.
Sweep - deals 6,000 damage and knockdown for 3 seconds.
Captured Horde / Alliance Soldier
Barbed Shot - deals 4,513-4,987 physical damage and an additional 500 damage every 3 seconds for 12 seconds.
Captured Horde / Alliance Soldier 2

Heroic Strike - strong melee attack that deals 5,088-5,912 with a high amount of threat
Devastate - sunders armor and causes 50%, sunder armor stacks up to 5 times
Captured Horde / Alliance Healer
Heal - area of effect healing (details needed)
Dark Rune Acolyte
Holy Smite - deals 7,500 holy damage
Greater Heal - heals an ally for 86,500 (confirmation needed on this number)
Dark Rune Champion
Whirlwind - standard area of effect whirlwind damage plus an additional 100
Mortal Strike - deals 250% weapon damage and reduces healing by 50% for 5 seconds.
Charge - charges and enemy knocking them down and dealing normal weapon damage plus 120.
Dark Rune Evoker
Runic lightning - deals 7.875-10,125 nature damage
Runic Mending - heals an ally for 18,500-21,500 then heals an additional 6,000 health every 1 second for 15 seconds.
Dark Rune Commoner
Low Blow - standard attack and reduces the target’s damage dealt by 3% for 20 seconds.
Pummel - interrupts spell casting for 5 seconds.
Dark Rune Warbringer
Runic Strike - deals nature damage equal to weapon damage with an additional 1000
Iron Honor Guard
Cleave - deals 150% of melee damage, standard cleave mechanic
Hamstring - Deals 50% of normal melee damage and reduces movement speed by 50% for 6 seconds
Iron Ring Guard
Whirling Trip - 2 second knockdown, dealing weapon damage
Impale - causes target to bleed until healed past 90% of maximum health. Deals 1750 damage per second until removed.
Ancient Rune Giant
Stomp - weapon damage plus a 2 second knock down.
Runic Colossus
Smash - deals 13,875-16,125 damage, knocking them up
Charge - charges an enemy, deals normal damage with an additional 120 and a knock back
Runic Barrier - reduces physical damage taken by 50% and deals 2,000 arcane damage to attackers
Thorim Boss Strategy
Before the fight even begins you’ll want to split your raid into 2 groups. Group 1 will be the gauntlet group and should be composed of at least 2 tanks, 3 healers and caster DPS. Group 2 will be the Colosseum group and will fight the mobs in the arena area. This group should also have 2 tanks, 3 healers and your melee / hunter dps (due to the silence). The gauntlet group will work their way up to Thorim and the Colosseum group will simply fight the mobs and survive until group 1 makes it to Thorim.

After group 1 completes the gauntlet Thorim will jump down into the Colosseum, group 1 will follow him. At this point it’s a pretty standard tank and spank fight. When Thorim hits a tank with unbalancing strike another tank will need to taunt. Continue pumping out as much DPS as possible. Now it’s just a DPS race against lightning charge, which will 1 shot tanks.