Mechano-Lord Capacitus

Abilities

Nether Charge - These mines are summoned throughout the fight, floating around the area and when triggered exploding in two short range AoE's and one final long range attack dealing 2000-3000 or so damage.

Head Crack - Used on highest aggro target, reduces stamina by 200.

Damage Reflect Shield - 750 damage to all melee attacks per hit

Magic Reflect Shield - Reflects all spells back at casters.

Fight

Capacitus is one of those hard boss fights, the nether charges make this fight rather awkward and can easily wipe your party, this makes avoiding the charges your first order of business. The main method of dealing with this is to have everyone without a melee requirement back up onto/around the stairs leading to his room, the tank will then aggro the boss and pull him back as the mines are dropped.

The second problem/trick is to keep a watch on the bosses shield, detect magic reveals his shields but it's rather easy to see for yourself as well, purple is normal, the damage shield is red and the magic shield is green, everyone should cut DPS when the damage shield comes up to avoid the tank taking unecessary damage/losing aggro to casters/ranged. If you think you can hand it have the tank continue holding aggro and throw your ranged DPS at him.

If you keep everyone at their proper position, watch the shields, and avoid his nether charges, this fight should be your win.

Nethemancer Sepethrea

Abilities

Frost Strike - Slows movement by 50%

Raging Flames - Summoned once Sepethrea is aggroed, un-banishable/immune to fear. The Raging Flame deal pure fire damage for around 400-700 per swing and leave a trail of fire, every 10-20 seconds they'll use hellfire and then re-target.

Dragon's Breath - Same as the mage ability, the disorient effect wipes aggro.

Fight

First thing to do is clearing the room, this'll give you insurance on your elemental kiting against pulling adds. When the fight begins and your tank aggroes the boss she'll immediately summon up her two raging flames, whoever gains aggro besides the tank/healer will need to kite circles around the room avoiding other party members, thankfully they move slowly.

Other than that this fight is pretty simple, just make sure to watch out for dragon's breath, the aggro wipe due to the disorient effect can be a killer, make sure your tank has aggro before re-engaging DPS.

Pathaleon the Calculator

Abilities

Mana Tap - Drains 1455 Mana.

Domination - Unremovable mind control.

AoE Silence - Medium range three second AoE silence.

Nether Wraiths - Summons 3-4 nether wraiths, each capable of casting arcane bolts dealing 1400-1700 damage per hit.

Fight

This fight really starts once you've defeated three waves of enemies, thus triggering Panthaleon to run towards your party and get picked up by the tank as fast as possible.

The main part of this fight is dealing with the nether wraiths, depending on what your class composition is you can do two different things, either fear the wraits or kill them. Parties with warlocks will want to have them fear the wraits away as the party focuses all dps on the boss, parties lacking warlocks however will need to focus all DPS on the wraiths each summon.

Besides handling the wraiths this fights simple, good luck.