Clockwork Sentinel — fantasy monster illustration. Clockwork Sentinel is a medium construct (Challenge Rating 4).

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Clockwork Sentinel

Medium Construct

AC
18
HP
60
Speed
35
CR
4

Armor Class 18

Hit Points 60 (8d8+24)

Speed 35 ft.


STR
16 (+3)
DEX
12 (+1)
CON
16 (+3)
INT
1 (-5)
WIS
6 (-2)
CHA
1 (-5)

Skills Survival +0, Athletics +5, Perception +0

Damage Immunities poison, psychic

Condition Immunities blinded, charmed, deafened, exhaustion, frightened, paralyzed, petrified, poisoned

Senses blindsight 120 ft. (blind beyond that range), passive Perception 12

Challenge 4


Traits

False Appearance. While motionless, the sentinel is indistinguishable from normal armor.

Clockwork Nature. A clockwork doesnt require air, nourishment, or rest, and is immune to disease.

Immutable Form. The clockwork is immune to any effect that would alter its form.

Actions

Multiattack. The sentinel attacks three times.

Halberd. Melee Weapon Attack: +5 to hit, reach 10 ft., one target. Hit: 8 (1d10 + 3) slashing damage.

Calculated Sweep. The sentinel makes a melee attack against each creature of its choice within 10 feet. On a critical hit the target makes a DC 13 Strength saving throw falling prone on a failure.

Bonus Actions

Overclock (Recharge 5-6). The sentinel takes the Dash action.

Reactions

Parry. The sentinel adds 2 to its AC against one melee attack that would hit it.

Community Images

Clockwork Sentinel — fantasy monster illustrationPrimary
FTTHelper · auto-generated · monster · monster

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Further reading

Jetpack7 Game Master Series
The Game Master's Book of Random Encounters
Jeff Ashworth · 2020
The Game Master's Book of Traps, Puzzles and Dungeons
Jeff Ashworth · 2022
The Game Master's Book of Legendary Dragons
Aaron Hübrich · 2022