Swarm, Gryllus 2014

CR 6 construct

Large construct, lawful neutral

Armor Class: 15 (natural armor)
Hit Points: 110 (17d10+17)
Speed: 30 ft.

STR14 (+2)

DEX18 (+4)

CON13 (+1)

INT6 (-2)

WIS13 (+1)

CHA10 (+0)

Saving Throws
Skills: Perception +1
Vulnerabilities: acid, fire
Resistances: bludgeoning, piercing, slashing
Condition Immunities: charmed, exhaustion, frightened, grappled, paralyzed, petrified, poisoned, prone, restrained, stunned
Senses: darkvision 60 ft., passive Perception 14
Languages: understands those of its creature but can't speak
Challenge: 6 (2,300 XP) · Proficiency Bonus +3

Book Bound.

Hp max is reduced by 1 every min it is more than 60' from its book. When hp max reaches 0 dies. If its book is destroyed or moved to another plane of existence separate from swarm must make DC 11 Con save or be reduced to 10 hp. Swarm can bind itself to new book by spending a short rest in contact with the new book.

Construct Nature.

Doesn’t require air food drink or sleep.

Immutable Form.

Immune: form-altering spells/effects.

In the Margins.

Can spend half its move to enter/exit its book. While inside its book it is indistinguishable from illustrations on a page.

Swarm.

Can occupy another creature’s space and vice versa; can move through opening large enough for Tiny construct. Can’t regain hp or gain temp hp.

Source: Tome of Beasts 3 (Kobold Press) · License: OPEN GAME LICENSE Version 1.0a details