Spiderdragon

(Vecna: Eve of Ruin)

Huge monstrosity, Chaotic Evil

Armor Class17 (natural armor)
Hit Points152 (16d12 + 48)
Speed50 ft., climb 60 ft.
STRDEXCONINTWISCHA
21 (+5) 18 (+4) 16 (+3) 7 (-2) 14 (+2) 18 (+4)
Saving ThrowsDex +8, Str +9
SkillsIntimidation +8, Perception +6
Damage Vulnerabilities—
Damage Resistancespoison; psychic
Damage Immunities—
Condition Immunities—
Sensesdarkvision 90 ft., passive Perception 16
LanguagesAbyssal, Draconic, Undercommon
Challenge11

Traits

Magic Resistance.

The spiderdragon has advantage on saving throws against spells and other magical effects.

Spider Climb.

The spiderdragon can climb difficult surfaces, including upside down on ceilings, without needing to make an ability check.

Web Walker.

The spiderdragon ignores movement restrictions caused by webbing.

Actions

Multiattack.

The spiderdragon makes one Bite attack and two Claw attacks.

Bite.

Melee Attack Roll: +9 to hit, reach 10 ft., one target. Hit: 10 (1d10 + 5) piercing damage plus 13 (2d12) poison damage.

Claw.

Melee Attack Roll: +9 to hit, reach 5 ft., one target. Hit: 12 (2d6 + 5) slashing damage.

Spiderling Breath (Recharge 5-6).

The spiderdragon exhales venomous spiderlings in a 30-foot cone. Each creature in that area must make a DC 15 Dexterity saving throw, taking 33 (6d10) piercing damage and 33 (6d10) poison damage on a failed save or half as much damage on a successful one.