Necrotech Thunderer — fantasy monster illustration. Necrotech Thunderer is a huge undead (Challenge Rating 8).

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Necrotech Thunderer

Huge Undead, neutral evil

AC
14
HP
126
Speed
20
CR
8

Armor Class 14 (natural armor)

Hit Points 126 (11d12+55)

Speed 20 ft.


STR
20 (+5)
DEX
5 (-3)
CON
21 (+5)
INT
5 (-3)
WIS
14 (+2)
CHA
9 (-1)

Saving Throws Dex +0, Wis +5

Skills Perception +2

Damage Resistances nonmagic B/P/S attacks

Damage Immunities necrotic, poison

Condition Immunities blinded, poisoned

Senses blindsight 120', passive Perception 15

Languages understands Common and Darakhul but can't speak

Challenge 8


Traits

Siege Monster. Double damage to objects/structures.

Turn Resistance. Advantage: saves vs. turn undead effects.

Undead Nature. Doesn't require air food drink or sleep.

Actions

Multiattack. Two Trample attacks.

Trample. Melee Weapon Attack: +8 to hit, 5 ft., one target, 21 (3d10+5) bludgeoning damage.

Ballista Shot. Chooses up to two points it can see within 120' of it. The thunderer can't choose a point within 10 ft. of it. Each creature within 5 ft. of a point must make a DC 15 Con save taking 14 (4d6) necrotic on a failed save and half damage if made. If a creature is within 5 ft. of both points it has disadvantage on the save but it takes damage from only one effect not both.

Concentrated Shot (Recharge 5-6). Picks a point it can see within 120' of it. Each creature within 20' of that point must make a DC 15 Con save. On a failure a creature takes 35 (10d6) necrotic and suffers one level of exhaustion. On a success a creature takes half the damage and doesn't suffer a level of exhaustion.

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Necrotech Thunderer — 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