Builder’s Gate

Updated 2026-09-27

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Monster Codex

StandardDoppelganger · Act 3

Fumm

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Hit points · HP
88
Armour class · AC
16
Level
8
Difficulty
Strength
18+4
Dexterity
18+4
Constitution
14+2
Intelligence
14+2
Wisdom
14+2
Charisma
14+2

Attacks and skills 12

Jump
Jump up, down, and across. Your Strength affects how far you can jump.
4.5m
Bonus ActionMovement Speed 3
Dash
Cover more distance this turn: double your movement speed.
Action
Doppelganger
Take the shape of a small or medium creature you've seen.
Bonus Action
Dismiss Shapechanger
Change back to your original form.
Bonus Action
Morphic Ambush
Undergo a shocking transformation to startle your foes. Successfully Ambushed entities are more susceptible to your attacks.
Wisdom saving throw
Bonus Action
Concussive Smash
Possibly Daze your target. They can't take reactions and lose the Dexterity bonus to their Armour Class.
Action
Weakening Strike
This non-lethal attack possibly inflicts Weak Grip, hindering the target's attacks.
Action
Main Hand Attack
Make a melee attack with your equipped weapon.
Action
Multiattack
Descend on an Ambushed creature to eviscerate it with your doppelganger claws.
1.5m
Action
Possible damage typesBludgeoning
Backbreaker
Possibly knock your enemy Prone.
Action
Shove
Try to push a target away. Your chances depend on your Athletics, and are higher if you're hidden or invisible.
1.5m
Bonus Action
Slam
Hit a target with your bare fists.
1.5m
Action
Possible damage typesBludgeoning

Traits 6

Opportunity Attack

Automatically attack an enemy moving out of your reach.

Darkvision

You can see in the dark up to 12m.

Extra Attack

Can make an additional free attack after making an unarmed or weapon attack. If you gain the Extra Attack feature from more than one class, they don't add together.

Multiattack: Morphic Ambush

Can Multiattack if the target is Ambushed.

Grim Irony

Whenever this weapon lands a critical hit, both target and attacker have to succeed a Wisdom Saving Throw, or be affected by fits of laughter.

Darkness Rules

No game description available.

Initial conditions and difficulty effects 2

Shapechanged

This creature has shapechanged into a male human.

Clown Face-Paint

You are unaffected by Hideous Laughter.
Statistics and references

Parentheses show changes from Balanced. HP applies initial and difficulty effects to the game base value; combat scripts and conditional effects can change it.