Black Shuck

Innate Spellcasting. Black Shuck’s innate spellcasting ability is Wisdom (spell save DC 15). It can innately cast the following spells, requiring no material components:
Constant: pass without trace
At will: divination (indefinite timespan; death omens only)
3/day: fog cloud, hellish rebuke, hunter’s mark

Keen Hearing and Smell. Black Shuck has advantage on Wisdom (Perception) checks that rely on hearing or smell.

Magic Resistance. Black Shuck has advantage on saving throws against spells and other magical effects.

Terrifying Howl. Black Shuck can use a bonus action to unleash a terrifying howl. Each creature of its choice within 120 feet of Black Shuck that is able to both see and hear it must succeed on a DC 15 Wisdom saving throw or become frightened for 1 minute. A creature can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success. If a creature’s saving throw is successful or the effect ends for it, the creature is immune to Black Shuck’s Terrifying Howl for the next 24 hours.

Multiattack. Black Shuck attacks twice.

Bite. Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 13 (2d8+4) magical piercing damage. If the target is a creature, it must succeed on a DC 15 Strength saving throw or be knocked prone.

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