Sources
CR
Type
Size
Alignment
Movement

Skeletal Juggernaut

Large Undead, Lawful Evil

Armor Class 13 (armor scraps)
Hit Points 142 (19d10 + 38)
Speed 30 ft.
STR
16
+3
DEX
14
+2
CON
15
+2
INT
6
-2
WIS
8
-1
CHA
5
-3
Damage Vulnerabilities bludgeoning
Damage Immunities poison
Condition Immunities Exhaustion, Poisoned
Senses darkvision 60 ft., passive Perception 9
Languages
Challenge 5 (1,800 XP)

Traits

Disassemble. If the juggernaut is reduced to 0 hit points, twelve skeletons rise from its remains.

Falling Apart. If the juggernaut does not have all of its hit points at the start of its turn, it loses 10 hit points.

Actions

Multiattack. The juggernaut makes two claws attacks.

Claws. Melee Weapon Attack: +6 to hit, reach 10 ft., one target. Hit:12 (2d8 + 3) slashing damage.

Avalanche of Bones (Recharge 5–6). The juggernaut collapses into a large heap before quickly reforming. Each creature within 10 feet of the juggernaut must make a DC 14 Dexterity saving throw, taking 18 (4d8) bludgeoning damage on a failed save, or half as much damage on a successful one. A creature that fails this saving throw is also knocked prone.

Lore

As seen lumbering across the beaches in Isle of the Abbey, a skeletal juggernaut is an oversized, bipedal assembly of bones that loses a portion of its mass with each step. These skeletal guardians hold together for only a short time before disassembling into a gang of individual undead.