Sources
CR
Type
Size
Alignment
Movement

Stone Defender

Medium Construct, Unaligned

Armor Class 16 (natural armor)
Hit Points 52 (7d8 + 21)
Speed 30 ft.
STR
19
+4
DEX
10
+0
CON
17
+3
INT
3
-4
WIS
10
+0
CHA
1
-5
Damage Immunities poison; bludgeoning, piercing, slashing, from nonmagical attacks that aren't adamantine
Condition Immunities Charmed, Exhaustion, Frightened, Paralyzed, Petrified, Poisoned
Senses darkvision 60 ft., passive Perception 10
Languages understands one language of its creator but can't speak
Challenge 4 (1,100 XP)

Traits

False Appearance. While the stone defender remains motionless against an uneven earthen or stone surface, it is indistinguishable from that surface.

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

Actions

Slam. Melee Weapon Attack: +6 to hit, reach 5 ft., one target. Hit:11 (2d6 + 4) bludgeoning damage, and if the target is Large or smaller, it is knocked prone.

Reactions

Intercept Attack. In response to another creature within 5 feet of it being hit by an attack roll, the stone defender gives that creature a +5 bonus to its AC against that attack, potentially causing a miss. To use this ability, the stone defender must be able to see the creature and the attacker.

Lore

The gnomes' efforts to invent and tinker with magic and mechanical devices produce many failed constructs, but also result in genuine advances, such as clockworks. Since their discovery, the methods used to craft clockworks have passed from one community of gnomes to another and down the generations.