15 (natural armor)
120 (16d8+48)
walk 40 ft., climb 40 ft.
Dex +5, Con +6
Perception +5, Stealth +8, Survival +5
cold, fire, lightning
necrotic, poison
poisoned
darkvision 60 ft.
Abyssal, telepathy 120 ft.
7
The vellso has advantage on Wisdom (Perception) checks that rely on smell.
The vellso has advantage on saving throws against spells and other magical effects.
The vellso's weapon attacks are magical.
The vellso can climb surfaces, including upside down on ceilings, without needing to make an ability check.
The vellso makes two attacks. one with its bite and one with its claws.
Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 13 (2d8 + 4) piercing damage and the target must succeed on a DC 15 Constitution saving throw or take 13 (3d8) necrotic damage and contract the carrion curse disease (see sidebar).
Melee Weapon Attack. +7 to hit, reach 5 ft., one target. Hit: 11 (2d6 + 4) slashing damage.