Magic Resistance. The abyssal viper has advantage on saving throws against spells and other magical effects.
Multiattack. The abyssal viper makes two attacks: one with its bite and a mental attack.
Bite. Melee Weapon Attack: +3 to hit, reach 5 ft., one target. Hit: 7 (2d4 + 2) piercing damage. A creature that takes piercing damage is poisoned and must succeed on a DC 11 Constitution saving throw, taking 10 (3d6) poison damage on a failed save, or half as much damage on a successful one.
Dissonant whispers, mental attack. Target must make wisdom saving throw or take 10 (3d6+2) psychic damage. Targets take half damage on successful save. DC 13
Mental stun, mental attack. Target must make wisdom saving throw or be stunned until the start of the abyssal viper's next turn. DC 13
Viper reflexes. As a reaction the abyssal viper may make a bite attack when reacting to a melee attack that caused the viper to take damage. The melee attack must have originated within 5 ft.
Description
The abyssal viper originates from the abyss. It may be summoned from that plane by spells which summon snakes, demons, or creatures of the abyssal plane.
the viper has six glowing eyes. Its appearance reflects the nature of the abyssal plane it hails from. As a result of its demonic and abyssal origins its strong scales are resistant to lightning, fire, and cold damage. It's body is immune to poison. It's scales are able to deflect much of the damage from bludgeoning, piercing, and slashing attacks from nonmagical weapons.
Abyssal vipers are intelligent sentient beings able to negotiate and converse. This is typically only with those that have some form of magical leverage over the demonic being. Otherwise the abyssal viper is prone to torture and feeding on those it encounters. Able to speak telepathically it is not above playing mind games with its next meal.