Armor Class 16 (natural armor)
Hit Points 161 (17d10 + 68)
Speed fly 30 ft.
Saving Throws CON +8, WIS +5
Skills Perception +5
Damage Immunities lightning
Condition Immunities prone
Senses darkvision 120 ft., passive Perception 15
Languages Deep Speech, Undercommon
Challenge 10
Lightning Blood. A creature within 5 feet of the death kiss takes 5 (1d10) lightning damage whenever it hits the death kiss with a melee attack that deals piercing or slashing damage.
Multiattack. The death kiss makes three tentacle attacks. Up to three of these attacks can be replaced by Blood Drain, one replacement per tentacle grappling a creature
Tentacle. Melee Weapon Attack: +8 to hit, reach 20 ft., one target. Hit: 14 (3d6 + 4) piercing damage, and the target is grappled (escape DC 14) if it is a Huge or smaller creature. Until this grapple ends, the target is restrained, and the death kiss can't use the same tentacle on another target. The death kiss has ten tentacles.
Blood Drain. One creature grappled by a tentacle of the death kiss must make a DC 16 Constitution saving throw. On a failed save, the target takes 22 (4d10) lightning damage, and the death kiss regains half as many hit points.
Volo's Guide to Monsters, p. 124