Sources
CR
Type
Size
Alignment
Movement

Walking Statue of Waterdeep

Gargantuan Construct, Unaligned

Armor Class 17 (natural armor)
Hit Points 314 (17d20 + 136)
Speed 60 ft.
STR
30
+10
DEX
8
-1
CON
27
+8
INT
1
-5
WIS
10
+0
CHA
1
-5
Saving Throws CON +14
Damage Immunities cold, fire, poison, psychic; bludgeoning, piercing, slashing, from nonmagical attacks not made with adamantine weapons
Condition Immunities Charmed, Exhaustion, Frightened, Paralyzed, Petrified, Poisoned, Stunned
Senses truesight 120 ft., passive Perception 10
Languages
Challenge 18 (20,000 XP)

Traits

Crumbling Colossus. When the statue drops to 0 hit points, it crumbles and is destroyed. Any creature on the ground within 30 feet of the crumbling statue must make a DC 22 Dexterity saving throw, taking 22 (4d10) bludgeoning damage on a failed save, or half as much damage on a successful one.

Immutable Form. The statue is immune to any spell or effect that would alter its form.

Magic Resistance. The statue has advantage on saving throws against spells and other magical effects.

Siege Monster. The statue deals double damage to objects and structures.

Actions

Multiattack. The statue makes two melee attacks.

Slam. Melee Weapon Attack: +16 to hit, reach 5 ft., one target. Hit:29 (3d12 + 10) bludgeoning damage.

Hurled Stone. Ranged Weapon Attack: +16 to hit, range 200/800 ft., one target. Hit:43 (6d10 + 10) bludgeoning damage.

Lore

Scattered throughout Waterdeep are eight enormous statues that can defend the city in times of great peril. Because they are so destructive, the walking statues are used only to fend off armies and seemingly insurmountable foes.