Cathedral Level 4 · area boss

Kael Duskmourn, the Bound Thrall

the Bound Thrall

A named threat of Cathedral Level 4, encountered rarely and never in numbers - real Dungeons & Dragons statistics, no auto-computed shortcuts.

CR 20 Outsider · Undead 12 / Cleric 4 / Thrall_of_Orcus 4 DEATH · UNDEATH domains resref cl4_kael

Stat block

STR
26
+8
DEX
14
+2
CON
16
+3
INT
12
+1
WIS
16
+3
CHA
18
+4
Hit points
220
Natural AC
8
Skills
Concentration 15 · Listen 10 · Spot 10
Feats
Toughness, GreatFort, PowerAtk, Cleave, GreatCleave, ImpInit

Prepared spells

LevelKnown / Prepared
0Bane, Cause Fear
1Death Knell, Inflict Moderate Wounds
2Animate Dead

Combat sequence

Layered on top of the module's own combat AI, which still picks targets and positioning. The fight below moves through real hit-point-gated phases; every save DC and attack bonus computes from the stat block above at runtime.

I

Orcus's Due

Above 66% hp

A plain bolt of negative energy, offered up the way a due is always offered - without ceremony.

II

Reanimation

66%-33% hp

Whatever's died nearest him gets up again as a thrall, indifferent to whether it wants to.

III

The Debt Unpaid

Below 25% hp, once

A fear pulse, then an unholy blessing that never turns back off.

Why these numbers

CR 20 is set against Cathedral Level 4's own real ambient ceiling, not auto-computed from level alone - a genuine Undead 12 / Cleric 4 / Thrall_of_Orcus 4 build at 20 total levels.

Hit points (220) follow this project's own average-hit-dice convention, and every save/attack bonus derives from the ability scores above at runtime - nothing here is hardcoded past the phase gates themselves.

How it's wired

Boss-flagged (bypasses the drop-rate roll, two loot-generation passes) and gated to a single spawn - only one Kael Duskmourn is ever up in Cathedral Level 4 at a time.