Razorclaw the Butcher

Stables and dining hall
Cross the courtyard to the kitchen for Razorclaw, then continue into the dining hall for Silverlaine. The stables are a side pull: prepare crowd control before engaging the Fel Steeds and Shadow Charger together. Clear the dining room around Silverlaine before pulling him so Veil of Shadow does not coincide with a second pack.
Razorclaw the Butcher
Elite HumanoidRazorclaw punishes a mana user who takes his attacks because Butcher Drain removes the resource they need to keep fighting.
Abilities

Butcher Drain
Butcher Drain removes mana from its victim. Mana-using damage dealers and healers should avoid taking Razorclaw's attacks.
Tank- Keep Razorclaw's attacks on you. If you tank with mana, reserve enough for threat abilities while Butcher Drain is removing it.
Healer- Stay out of Razorclaw's melee reach so an accidental target change does not drain the mana needed to heal the kitchen pull.
Damage- Let the tank establish Razorclaw's attention before attacking; taking threat is especially costly for a caster because Butcher Drain removes mana.