Swamplord Musel'ek Abilities & Strategy

Swamplord Musel'ek is a Broken hunter, ruler of the Murkblood, and the third boss of The Underbog. He is accompanied by his pet, Claw.

Abilities

Aimed Shot: Musel'ek will use this ability when nobody is in melee range. It can hit for over 2,000 damage on cloth wearing classes.
Shoot: Musel'ek also fires Auto Shots. These hit for far less than his Aimed Shot.
AoE Throw Freezing Trap: From time to time Musel'ek will freeze the whole party for a few seconds and take distance. This effect is resistible. After taking distance, he usually uses his Aimed Shot ability. This can also be broken by damage.
Multi-Shot: Hits multiple players and can cause over 2,000 damage to cloth wearers.
Claw's Echoing Roar: Reduces the whole party's armor by 75%. This can be avoided by having him tanked away from the rest of the group.
Claw's Feral Charge: Musel'ek will make Claw charge a random person. Claw will charge multiple times on Heroic mode and also knock players back a short distance.

Strategy

This fight is similar to the Illyanna Ravenoak encounter in Dire Maul and can be completed with a single tank. In order to do so the tank first attacks Claw for a few seconds to build up threat before switching to Musel'ek. Once the tank has built up enough threat, the rest of the party can attack him and get him down quite quickly. Musel'ek will occasionally freeze the whole group with an AoE Freezing Trap and take some distance so he can shoot. It is important for the tank to get back into the hunter's melee range immediately. Once the hunter is dead the group can focus on Claw, who will turn friendly at 20% health and expose himself as Windcaller Claw. Alternatively, the bear can be burnt to 20% first, removing it from the fight, and then the boss engaged. The primary concern appears to be healing interruption and proper double-tanking.

Heroic Mode

This fight does not appear to change much on Heroic, although Claw's Echoing Roar reduces armor by 82% now.