A devil the count bound to his roofs, long ago, to bring back whatever of his tries to leave. It is tall and red and winged, and drags hooked chains from its arms; hanging in them are the dead it brought back, still asking to go.
AC
HP
Speed
CR
XP
17
180 (19d10+76)
30 ft, fly 60 ft
11
7200
STR
DEX
CON
INT
WIS
CHA
20 (+5)
16 (+3)
18 (+4)
13 (+1)
14 (+2)
17 (+3)
Saving throws: STR +9, CON +8, WIS +6
Skills: Perception +6, Intimidation +7
Resistant: cold
Immune: fire, poison
Condition immunities: poisoned
Senses: darkvision 120 ft; passive Perception 16
Languages: Infernal, Common, telepathy 120 ft.
Traits
Magic Resistance. Advantage on saving throws against spells and other magical effects.
Legendary Resistance (2/Day). When Querreth fails a saving throw, it can choose to succeed instead, twice a day.
Gaoler of the Roofs. The count bound Querreth to the roofs of Castle Ravenloft long ago. It can't leave them, and it brings back anything of the count's that tries to: the spawn, the servants and the guests who went up to look at the sky. The ones it caught hang in its chains still.
Actions
Multiattack. Querreth makes two Chain attacks and one Claw attack.
Chain. Melee Attack Roll: +9, reach 10 ft. Hit: 12 (2d6 + 5) Slashing damage. If the target is Large or smaller, it has the Grappled condition (escape DC 16), held by one of Querreth's two chains.
Claw. Melee Attack Roll: +9, reach 5 ft. Hit: 10 (1d10 + 5) Slashing damage plus 10 (3d6) Fire damage.
The Chains Answer. Strength Saving Throw: DC 16, up to three creatures Querreth can see within 30 feet. Chains come up out of the stones of the roof and wrap them. Failure: 22 (4d10) Bludgeoning damage, and the target has the Restrained condition until the end of Querreth's next turn. Success: Half damage only.