Bone Colossus
Gargantuan Undead, chaotic evil (CR 13)Armor Class 16 natural armor
Hit Points 181 (11d20+66)
Speed 30 ft.
24 (+7)
11 (+0)
22 (+6)
14 (+2)
16 (+3)
16 (+3)
Skills intimidation 13, perception 8
Senses darkvision 120 ft., passive Perception 18
Languages Common, Darakhul
Challenge Rating 13
Actions
Multiattack.
The bone colossus makes two attacks.
Thunderous Slam (Colossus Form Only).
Melee Weapon Attack: +12 to hit, reach 15 ft., one target. Hit: 29 (4d10 + 7) bludgeoning damage plus 10 (3d6) thunder damage, and the target must succeed on a DC 18 Strength saving throw or be knocked prone.
Razor Teeth (Swarm Form Only).
Melee Weapon Attack: +12 to hit, reach 0 ft., one target in the swarmâs space. Hit: 21 (6d6) piercing damage, or 10 (3d6) piercing damage if the swarm has half its hp or fewer.
sizeGargantuan
typeUndead
group
alignmentchaotic evil
strength_save
dexterity_save
constitution_save11
intelligence_save
wisdom_save8
charisma_save
perception8
damage_vulnerabilities
damage_resistancesbludgeoning, piercing, and slashing from nonmagical attacks
damage_immunitiesnecrotic, poison
condition_immunitiescharmed, exhaustion, frightened, paralyzed, poisoned
cr13
reactions
legendary_desc
legendary_actions
special_abilitiesname: Collective Mind,desc: The bone colossusâ individual posthumes are connected via a hive mind. It can telepathically communicate with any of its individual posthumes within 50 miles of it, and it canât be surprised. If the bone colossus is reduced to half its hp or fewer, its Intelligence score is reduced to 1.,name: Siege Monster,desc: The bone colossus deals double damage to objects and structures.,name: Swarm Form,desc: A bone colossus can use its action to split into four individual swarms of tiny bone posthumes. Each swarm has an hp total equal to the bone colossusâ hp divided by 4 (rounded down), and all are affected by any conditions, spells, and other magical effects that affected the bone colossus. The swarms act on the same initiative count as the bone colossus did and occupy any unoccupied space that previously contained the bone colossus. A bone swarm can occupy another creatureâs space and vice versa, and the swarm can move through a space as narrow as 1 foot wide without squeezing. A swarm canât regain hp or gain temporary hp. As an action, the swarms can reform into a single bone colossus as long as all surviving swarms are within 5 feet of each other. The reformed bone colossusâ hp total is equal to the combined remaining hp of the swarms, and the bone colossus is affected by any conditions, spells, and other magical effects currently affecting any of the swarms. It occupies any unoccupied space that previously contained at least one of the swarms that formed it.,name: Turn Resistance,desc: The bone colossus has advantage on saving throws against any effect that turns undead.
spell_list
page_no267
document__license_urlhttp://open5e.com/legal
document__slugtob2
document__titleTome of Beasts 2
document__urlhttps://koboldpress.com/kpstore/product/tome-of-beasts-2-for-5th-edition/
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Tome of Beasts 2, page no. 267