Black Shuck

Large Fiend chaotic evil

STR	DEX	CON	INT	WIS	CHA
19 (+4)	16 (+3)	21 (+5)	14 (+2)	17 (+3)	15 (+2)

Saving Throws: Str +8, Dex +7, Con +9, Wis +7
Skills: perception +3
Damage Immunities: necrotic, poison; bludgeoning, piercing or slashing from nonmagical attacks not made with silvered weapons
Damage Resistances: cold, fire, lightning
Condition Immunities: charmed, frightened
Senses: darkvision 90', truesight 60', passive Perception 13
Languages: understands Abyssal and Common but can't speak

Blood Frenzy: Has advantage on attack rolls vs. any creature that doesn't have all its hp.
Keen Hearing and Smell: Has advantage on Wis (Perception) checks that rely on hearing or smell.
Water Walker: Can move across the surface of water as if it were harmless solid ground. This otherwise works like the water walk spell.

Multiattack: Three Bites and can use Curse of the Grave or Fearsome Howl if available. If 2+ Bites hit a Med or smaller target black shuck sinks in its teeth shaking head violently. Target: DC 17 Str save or 7 (2d6) slashing damage and be thrown up to 15 ft. in random direction and knocked prone.
Bite: Melee Weapon Attack: +8 to hit, 5 ft., one target, 13 (2d8+4) piercing damage and 10 (3d6) necrotic.
Curse of the Grave: Glares at one creature it can see within 30' of it. Target: DC 17 Wis save or be cursed: disadvantage on next two death saves it makes in the next 7 days. Curse lasts until cursed creature has made two death saves until 7 days have passed or until it is lifted by a remove curse spell or similar magic.
Fearsome Howl (Recharge 5-6): Howls a haunting tune. Each creature within 60' and can hear it: frightened until the end of its next turn (DC 17 Wis negates). A frightened creature concentrating on a spell must make DC 17 Con save or it loses concentration.