As other people said, Lamatar's awesome art needs an equally awesome stat block.
I created the following unique wight for this purpose. I'm very bad at numbers so I'll like some opinions about it. I intended it to be CR 8.
The flesh of this walking corpse is rotting and putrid, its body skeletal in places and its eye sockets glowing with blue light. He carries two ice swords and an ice-covered armor. A cloak of fog surrounds him, masking some of his horrid features but chilling everything arround.
Ice-mist Wight
LE Advanced medium undead (cold)
Init +3; Senses darkvision 60 ft., fogsight; Perception +11
Aura Grave Mist (15 ft., 1d6 cold damage)
DEFENSE
AC 26, touch 14, flat-footed 20 (+4 armor, +5 Dex, +6 natural, +1 dodge)
hp 105 (10d8+50)
Fort +8, Ref +8, Will +10
Defensive Abilities undead traits, turn resistance +2; SR 19
Immunity Cold
Weaknesses resurrection vulnerability, fire vulnerability
OFFENSE
Speed 30 ft.
Melee +1 frost shortswords +13/+13/+8 (1d6+4 plus 1d6 cold plus energy drain/19-20)
Special Attacks create spawn, energy drain (1 level, DC 15)
TACTICS
Lamatar activates his Grave Mist aura and hides. Then moves to attack the nearest creature, making only one attack at +15. The following rounds, attacks anyone in melee with him unless a creature is particularly damaged, in which case he tries to slay it and convert it into a wight spawn. He fights until death.
STATISTICS
Str[/u] 22, [b]Dex 20, Con —, Int 15, Wis 17, Cha 20
Base Atk +7; CMB +13; CMD 28
Feats Two Weapon Fighting, Weapon Focus (longsword), Dodge, Toughness, Stealthy
Skills Acrobatics +18, Escape Artist +20, Intimidate +18, Knowledge (religion) +15, Perception +16, Stealth +28;
Racial Modifier +8 Stealth in fog
Languages Common, Giant
SQ create spawn, grave gear
SPECIAL ABILITIES
Grave Mist (Su)
Functions as a constant Fog Cloud spell centered on Lamatar, but any living creature who starts its turn inside the aura receives 1d6 points of cold damage. Lamatar can activate and suppress this aura as a move action. When suppressed, the fog evaporates in 1d4 rounds.
Fogsight (Su)
Inside fog, mist and any other vapor, Lamatar gains blindsight.
Grave Gear (Su)
Lamatar’s magical swords and armor are an extension of his deranged spirit. If slain, his gear melts.
Create Spawn (Su)
Any humanoid creature that is slain by a wight becomes a wight itself in only 1d4 rounds. Spawn so created are less powerful than typical wights, and suffer a –2 penalty on all d20 rolls and checks, as well as –2 hp per HD. Spawn are under the command of the wight that created them and remain enslaved until its death, at which point they lose their spawn penalties and become full-fledged and free-willed wights. They do not possess any of the abilities they had in life.
Resurrection Vulnerability (Su)
A raise dead or similar spell cast on a wight destroys it (Will negates). Using the spell in this way does not require a material component.
Thanks for reading,
Rhada.