Blastwork, Mine

Medium construct (tin, blastwork), unaligned

Armor Class 15 (natural armor)
Hit Points 1 (1d8 – 5)
Speed 15 ft. (30 ft. when rolling, 60 ft. rolling downhill), burrow 30 ft.

5 (-3) 1 (-5) 3 (-4) 1 (-5) 1 (-5) 1 (-5)

Damage Immunities fire, poison
Condition Immunities deafened, frightened, paralyzed, poisoned, prone
Senses tremorsense 60 ft., passive Perception 5
Proficiency Bonus +2
Challenge 1/2 (100 XP)


  • Constructed Nature. The construct doesn’t require air, food, drink, or sleep.
  • Earth Armor. The clockwork doesn’t provoke opportunity attacks when it burrows.
  • Earth Glide. The blastwork mine can burrow through nonmagical, unworked earth and stone. While doing so, the blastwork mine doesn’t disturb the material it moves through.
  • Fuse. The blastwork mine has a fuse that can be lit if it takes any fire damage. Lighting the fuse causes it to countdown by 1d6 rounds. After the set number of rounds goes by, the mine explodes on its turn as per its Combustion Engine.
  • Mine. When the construct dies, it inflicts 10 (3d6) fire damage in a 20 ft. radius. Creatures in the radius can make a DC 14 Dexterity saving throw for half damage.
  • Repairable. A DC 10 alchemist’s tools check restores one hit point for each point rolled over the DC.


  • Slam. Melee Weapon Attack: +0 to hit, reach 5 ft., one creature. Hit: 1 bludgeoning damage.


  • Aggressive. As a bonus action, the blastwork mine can move up to its speed toward an enemy of its choice that it can see or hear.


This rolling bomb has two eyes and a fuse! Blastwork mines are sent to deal with a variety of threats that are considered too dangerous to face directly. Blastwork mines move in a straight line towards any target they can sense, exploding on contact.

Despite their explosive nature, blastwork mines are surprisingly difficult to explode from a difference. Sometimes the mines’ fuses are intentionally lit, at other times they are sent after burrowdrakes, who end up accidentally exploding the mine with their breath weapon.

Unexploded blastwork mines are a dangerous threat; it’s left to drillmasters to remove them from tunnels.

Section 15: Copyright Notice

5E Foes: Video Game Bestiary. Copyright 2022, Mal and Tal Enterprises, LLC; Author Michael J. Tresca.

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