"Educated Guess" values have been recorded from Corecraft test server which isn't a primary source (credit for that research goes to NiM and Shiro). However, when I've tried to verify some of their values now and in the past, they've come out pretty much right and in my opinion are preferable to any guessed values and can be used for the time being until primary sources are studied.
In terms of Karazhan specifically, for now I'll be blindly recording the values from Corecraft test server unless I happen to already know of relevant sources. Primary sources can be studied afterwards if need be, but whether or not there's custom tuning involved, it's widely accepted the tuning feels right for 2.4.3 classes.
Mob
Damage
Health
Mana
Abilities
Immunities
Source
Comments
Spectral Stallion
4200-5800
71810
0
Absorb Vitality, Hoof Strike for +350 damage
?
Educated Guess
N/A
Spectral Charger
4200-6000
71810
0
Charge for melee damage +150, Fear
?
Educated Guess
Looking at Wowhead comments, Fear is cast after charge finishes
Spectral Stable Hand
2000-4200
37260
31550
Pierce Armor, Knockdown for 60-80, Whip Rage targeted at horses, Healing Touch for 11000-13000 targeted at horses
?
Educated Guess
N/A
Spectral Servant
4000-5800
69860
0
Curse of Past Burdens
?
Educated Guess
N/A
Spectral Apprentice
3700-5200
69860
0
Burning Brand for 139-161
?
Educated Guess
N/A
Midnight
4248-6007
379400
0
Knockdown for 133-161
Immune
Bestiary
N/A
Attumen the Huntsman
4715-7508
379400
0
Shadow Cleave for melee-1500, Intangible Presence, Berserker Charge for 300
Immune
Bestiary
N/A
Coldmist Window
4300-6100
71810
0
Frost Mist, Poison Bolt Volley for 1500-2500 and ticking 238-262
A random animal boss spawns when roughly 75% of trash has been cleared
Shadikith the Glider
6800-9700
379400
0
Sonic Burst for 2188-2812, Dive for melee, Wing Buffet for 1050-1350
Immune
Educated Guess
Same
Rokad the Ravager
5200-7300
352200
0
Ravage for +500 and 2550-3450 over 10sec
Immune
Educated Guess
Same
Wanton Hostess
5000-7100
95747
0
Transforms to banshee at 50% removing all debuffs. Before transformation Alluring Aura. After transformation Bewithing Aura and Banshee Wail
?
Educated Guess
N/A
Concubine
5000-7100
95747
0
Transforms to succubus at 50% removing all debuffs. Temptation (chance to heal target for 1500). After transformation Jealousy and Temptation (AoE seduce, removable with Tremor Totem)
Banishable but not enslaveable
Educated Guess
N/A
Night Mistress
4400-4900
76586
16155
Transform to undead at 50%. Shadow Bolt for 2200-2800, Searing Pain for 1800-2200. After transformation Impending Betrayal for 3000 after 10s
?
Educated Guess
N/A
Phantom Guardsman
5000-7000
71810
0
Shield Slam for 1850-2150, Summon Phantom Hound
?
Educated Guess
N/A
Spectral Sentry
2600-3300 shoot, 5000-7000 melee
71810
0
Dual Wield, Multishot for 3150-3850
?
Educated Guess
N/A
Phantom Hound
1100-1600
14362
0
Rend ticking for 300
?
Educated Guess
N/A
Maiden of Virtue
8800-12000
607000
67740
Holy Ground ticking for 240-360 every 3s and silencing for 1s, Holy Fire for 3238-3762 and DoT ticking 1750, Holy Wrath for 2200-2300
Immune
Educated Guess
N/A
Phantom Guest
1550-2850
19960
15775
Searing Pain for 1350-1650, Throw for 700-880, Curse of Agony ticking 500, Immolate for 2000 and ticking 200, Goblin Dragon Gun for 158-192, Holy Nova for 360-440, Impale ticking 500-750, Throw Dynamite for 425-575
?
Educated Guess
N/A
Phantom Valet
13500-23800
110700
0
Demoralizing Shout
?
Educated Guess
N/A
Phantom Attendant
2600-4700
49240
16155
Kick, Shadow Rejuvenation for 2000/tick
Can be shackled but not taunted
N/A
Ghostly Steward
6800-12000
71810
0
Frenzy at 50%, Drunken Skull Crack for melee+285-315 after enrage
?
Educated Guess
N/A
Skeletal Waiter
6500-11200
71810
0
Brittle Bones
?
Educated Guess
N/A
Spectral Retainer
7800-14000
98400
0
Shadow Rejuvenation for 2000/tick, Mass Dispel, Mind Control
?
Educated Guess
N/A
Spectral Servant
4000-7200
69860
0
Curse of Past Burdens
?
Educated Guess
N/A
Moroes
10400-16400
644980
0
Gouge for 950-1050, Garrote ticking 1075, Blind (closest non-tank), Frenzy at 30%, Vanish
There's very high damage on video that would check out but it's probably a crushing blow - either way it seems higher than post-nerf, health is unknown
Lady Keira Berrybuck
3400-5800
111780
25240
Blessing of Might, Divine Shield, Holy Light for 4600-5400
?
Educated Guess
N/A
Lady Catriona Von'Indi
3600-5900
111780
25240
Dispel Magic (used offensively against players), Holy Fire for 2500, Holy Fire for 850-1050 and DoT ticking 950, Greater Heal for 11000-14000
?
Educated Guess
N/A
Dorothea Millstipe
3500-6000
111780
25240
Shadowform, Mind Flay for 840 (before Shadowform buff), Mana Burn for 6000 mana
?
Educated Guess
N/A
Baron Rafe Dreuger
3700-6000
111780
25240
Hammer of Justice, Judgement of Command 1425-1563
?
Educated Guess
N/A
Lord Crispin Ference
3700-5200
139720
0
Disarm, Shield Wall, Heroic Strike for +500
Lord Robin Daris
3800-5400
139720
0
Mortal Strike for 250% damage, Hamstring for 20% damage, Whirlwind for +700 damage
?
Educated Guess
N/A
Spectral Chef
7500-10500
71810
0
Cleave for melee, Hamstring for 20% melee
?
Educated Guess
N/A
Ghostly Baker
5000-7100
71810
0
Rolling Pin for 2250-2750, Roast for 2400-2700 and DoT ticking 500
?
Educated Guess
N/A
Spectral Patron
1600-2250
19960
0
Left Hook for damage + 77-93
?
Educated Guess
N/A
Skeletal Usher
8700-12000
118060
33090
Frost Shock for 2800-3500, Ice Tomb ticking 600-700
?
Educated Guess
N/A
Ghostly Philanthropist
4600-6500
48621
16545
Incite Rage, Ill Gift for 3150-3850 but 1575-1925 mana restore
Spotlight, Curtain Call upon death for 2775-3225, Bad Poetry
?
Educated Guess
N/A
Phantom Stagehand
7000-7800
71810
0
Net, Sandbag for 3500-4500, Mallet Toss for 2975-4025
?
Educated Guess
N/A
Dorothee
3000-5000
216785
50805
Water Bolt for 2025-2475, Frightened Scream, Summon Tito
?
Educated Guess
N/A
Tito
1200-1800
49900
0
Annoying Yipping
?
Educated Guess
N/A
Strawman
6000-7200
158140
0
Burning Straw, Brain Bash, Brain Wipe
?
Educated Guess
N/A
Roar
3500-5000
158140
0
Frightened Scream, Shred Armor, Mangle for 1800-2400 and DoT ticking for 500
?
Educated Guess
N/A
Tinhead
5900-7300
158140
0
Rust, Cleave for +300 damage
?
Educated Guess
N/A
The Crone
7000-9800
216785
50805
Chain Lightning for 2775-3225, 20% chance on melee to Fiery Broom for 2375-2625, Cyclone
?
Educated Guess
N/A
The Big Bad Wolf
5800-8400
542000
0
Terrifying Howl, Little Red Riding Hood, Wide Swipe
?
Educated Guess
N/A
Julianne
4100-5800
216785
66740
Devotion, Powerful Attraction, Blinding Passion for 1500 and 3000 over 4s, Eternal Affection for 46250-53750
?
Educated Guess
N/A
Romulo
10000-14000
271000
0
Dual Wield, Daring, Posioned Thrust +100, Deadly Swathe for +110, Backward Lunge for 1900-2100
?
Educated Guess
N/A
Ghastly Haunt
13700-19000
123000
0
Shadow Shock for 3700-4300, Ethereal Curse
?
Educated Guess
N/A
Trapped Soul
13800-19000
98400
33090
Elemental Armor, Cone of Cold for 2600-3400
?
Educated Guess
N/A
Nightbane
14800-20800
2213100
0
Distracting Ash, Bellowing Roar, Smoldering Breath for 3700-4300 and DoT ticking 1688-1912, Charred Earth ticking 2188-2812, Cleave, Tail Sweep for 450 and 450 ticks, Rain of Bones for 352-408, Smoking Blast for 4200-4800 and 3000 fire damage over time
Astral Armor for 90% damage reduction when not evocating or enraged, Hateful Bolt for 4435-5999, soft enrage at 15%
Immune
Educated Guess
N/A
Astral Flare
N/A
23270
0
Arcing Sear for 675-825
Educated Guess
N/A
Arcane Protector
13000-18000
196800
0
Return Fire, Fist of Stone, Summon Astral Flare
Immune
Educated Guess
Three different retaliation modes: melee, ranged, casters. Announced by Protector saying "Activating defense mode mode EL-[7M/2S/5R] for melee, spells and ranged respectively
Astral Spark
N/A
1223
0
Sear for 650-985, Detonate for 1200-1450
?
Educated Guess
N/A
Mana Feeder
1050-1500
39920
0
Astral Bite for 255-295
?
Educated Guess
Immune to magic
Chaotic Sentience
3100-5000 (arcane)
71810
0
Unstable magic
?
Educated Guess
Immune to magic
Mana Warp
2500-3600 (arcane)
69860
0
Warp Breach for 5000-5500
Can be CCd
Educated Guess
N/A
Magical Horror
4750-6750 (arcane)
71810
32310
Power Distortion, Arcane Volley for 1625-1975
Immune
Educated Guess
N/A
Spell Shade
5200-5600
71810
0
Phasing Invisibility, Frostbolt for 1700-2300, Fireball for 1525-2075 and DoT ticking 200, Shadow Bolt for 2050-2775
Can be shackled
Educated Guess
Spells not reflectable
Shadow Pillager
3200-4500
59030
33090
Curse of Agony ticking 500, Searing Pain for 1350-1650, Immolate for 2000 and ticking 200
?
Educated Guess
N/A
Homonculus
800-900
18630
18930
Firebolt for 695-805
?
Educated Guess
N/A
Terestian Illhoof
8800-11800
1164300
0
Sacrifice ticking 1500 and 23285 health on Demon Chains, Shadow Bolt for 3600-4250
Immune
Educated Guess
N/A
Kil'rek
2500-3500
97800
35980
Amplify Flames, Broken Pact on Illhoof upn death
?
Educated Guess
N/A
Fiendish Imp
400-500
4591
7031
Firebolt for 180-210
?
Educated Guess
N/A
Shade of Aran
2063-2992
1416200
168388
Flame Wreath for 3238-3762 if you cross the line, Blizzard ticking 1623, Arcane Missiles ticking for 1270-1540, Frostbolt for 3600-4425 with chance of proccing Chains of Ice, Fireball for 3910-5290, Dragon's Breath for 6000 over 6s, disorienting target and dealing the tick damage to allies, Magnetic Pull/Mass Slow/Arcane Explosion for 9000-11000, Summon Water Elementals at 40% (despawn after 90s), Pyroblast for 7000-7500 after sheeping everyone and drinking up his mana to full, AoE counterspell at 10yd radius
Immune, can be interrupted
Educated Guess
3878 armor (Bestiary)
Conjured Elemental
?
2036800 (CC) 13967 (post-nerf)
0
Water Bolt for 1800-2200
Banishable and fearable
Educated Guess
Health seems outrageously high compared to post-nerf 13-14k but significant drop in health is a documented patch change and in Last Resort video you don't see the raid even attempting to kill them and tank hitting one of the elementals doesn't move health bars at all. Maybe they originally weren't "supposed" to be killed and instead just let to despawn after 90s
Sorcerous Shade
4800-6800
78700
33090
Shadow Bolt Volley for 1700-2300, Frostbolt Volley for 1700-2300, Fireball Volley for 1550-2050 and DoT ticking 200
?
Educated Guess
N/A
Ethereal Thief
10300-14600
98400
0
Disarm, Spatial Distortion, Cleave
?
Educated Guess
N/A
Ethereal Spellfilcher
9600-12600
98400
33090
Transference, Spatial Distortion, Arcane Volley for 2250-2750, Steal Magic
?
Educated Guess
N/A
Netherspite
12400-18000
1863000
3155
Nether Burn for 1200, Netherbreath for 4163-4837, Void Zone for 910-1110, Empowerment few seconds after portals spawn
Immune
Educated Guess
N/A
Fleshbeast
7500-10600
123000
0
Gaping Maw ticking 1150, Infectious Poison for 1020-1380
?
Educated Guess
N/A
Greater Fleshbeast
12400-17400
196800
0
Gaping Maw ticking 1150, Infectious Poison for 1020-1380
?
Educated Guess
N/A
Prince Malchezaar
10800-15400
1897000
0
Shadow Word Pain ticking 1500 (P1&3), Shadow Nova for 3000 (P1-3), Enfeeble (P1&2), Trash (P2), Sunder Armor (P2), Cleave (seems to be the "on next attack" variant, P2), Amplify Damage (P3), Infernal Hellfire for 875-1125, Dual Wield (P2), Prince Malchezaar's Axes for 1900-2400 (dual-wielding such that every second attack is for 50% damage)
"Educated Guess" values have been recorded from Corecraft test server which isn't a primary source (credit for that research goes to NiM and Shiro). However, when I've tried to verify some of their values now and in the past, they've come out pretty much right and in my opinion are preferable to any guessed values and can be used for the time being until primary sources are studied.
In terms of Karazhan specifically, for now I'll be blindly recording the values from Corecraft test server unless I happen to already know of relevant sources. Primary sources can be studied afterwards if need be, but whether or not there's custom tuning involved, it's widely accepted the tuning feels right for 2.4.3 classes.