AC 14
HP 78 (12d8 + 24; bloodied 39)
Speed 10 ft., fly 30 ft.
Proficiency +2; Maneuver DC 12
Skills Stealth +4
Damage Resistances necrotic
Damage Immunities poison
Condition Immunities charmed , exhaustion , poisoned
Senses darkvision 30 ft., passive Perception 10
Languages —
Despair Aura. A non-undead creature that takes an action or bonus action while within 10 feet of a ghasthopper can’t take another action, bonus action, or reaction until the start of its next turn. If a creature makes its saving throw , it is immune to any ghasthopper’s aura for the next 24 hours.
Incorporeal Movement. The ghasthopper can move through other creatures and objects as if they were difficult terrain . It takes 5 (1d10) force damage if it ends its turn inside an object.
Smoky Signals. The ghasthopper is invisible except when flying, attacking, or feeding on a host. During these activities, it appears as a wisp of smoke shaped like an insect.
Swarm. The swarm can occupy another creature’s space and move through any opening large enough for a Tiny creature. It can’t gain hit points, though it can gain temporary hit points from its Drain Health attack.
ACTIONS
Bleak Vibrations. Melee Weapon Attack: +5 to hit, reach 0 ft., one target. Hit: 8 (3d4 + 2) thunder damage plus 3 (1d6) psychic damage, or 4 (1d4 + 2) thunder damage plus 1 psychic damage if the swarm is blooded
Drain Health. Melee Weapon Attack: +5 to hit, reach 0 ft., one target. Hit: 9 (3d6) necrotic damage, or 1d6 necrotic damage if the swarm is bloodied . In addition, the cloud of ghasthoppers gains a number of temporary hit points equal to the amount of damage dealt.
Ghasthoppers use their invisibility to their advantage, creeping up on living creatures before darting in to use their Hungry Strike.