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Lock-Spark

Tiny construct, unaligned

AC
13
HP
5
Speed
20
CR
0

A fist-sized brass wisp-box that putters along lock gates on tiny feet. Lockkeepers wind them at dawn and they spend the day turning handwheels no one else wants to reach.


Armor Class 13 (brass casing)

Hit Points 5 (2d4)

Speed 20 ft., climb 10 ft.


STR
4 (-3)
DEX
12 (+1)
CON
10 (+0)
INT
6 (-2)
WIS
10 (+0)
CHA
3 (-4)

Skills Investigation +0

Damage Immunities poison

Condition Immunities poisoned

Senses darkvision 60 ft., passive Perception 10

Languages understands Common but cannot speak

Challenge 0


Traits

Valvehand. The lock-spark can turn valves, dog latches, and lock-gate handwheels. It opens ordinary sluice gates at a walking pace and never jams them.

Harmless Build. The lock-spark cannot attack. If threatened it folds flat, hisses steam, and waits to be picked up.

Actions

Assist Keeper. The lock-spark helps one creature it can see turn a wheel or hold a rope. That creature has advantage on its next Strength (Athletics) check to work a gate or valve, made within the next minute.

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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