Reaford Tabulus Vallersteil

Strategy

 * He is a formidable enemy. First, maximum buff (especially Death Ward) is a must. He is quite hard-boiled in necromancy.
 * Second - Reaford boasts with insanely high Reflex saves and Charisma, so your AoE spells are rarely effective, that's more than can be said for him. If you let Reaford cast Wail of the Banshee - you're dead. Yes. As simple as that. Only really high Fortitude save can prevent that.
 * Third - he is Undead and has Incorporeal Form, what lessens your deadly toolbox.
 * At the beginning of the fight split your ranged characters along the walls of his room to minimize collateral damage.
 * He starts with buffing himself, what increases not only AC (from good to very good), but also the power of his spells later and you really don't want to see that. So just hit him as hard and as fast as you can. Ghost and Holy are your best friends here. Remember, that he has a nasty habit to cast Vampiric Shadow Shield, so 2-ft-close melee characters will suffer a lot. And his Baleful Polymorph has 40 DC to remove, so if you get one - better reload.
 * So you can counter it with Dispel Magic. As he has high saves (31 DC to succeed in dispelling), Gloves of the Scribe from the Golden Golem Puzzle and Metamagic (Heighten Spell) can help you with that.
 * Disintegrate spell carries a heavy punch, too.

Loot

 * Frost Quarterstaff +2
 * Dark Master's Robe
 * Gloves of Elvenkind