Berrydra

Three Heads. The Berrydra has advantage on Wisdom(Perception) checks and on saving throws against being blinded, charmed, deafened, frightened, stunned, or knocked unconscious. If, at least, one head  is asleep, the other heads remain awake if wanted.

Berry Scent. The Berrydra can detect ripe fruit, berries, fermanted plants, and sweet substances within 300 feet because of its scent

Regenerative Biology. The Berrydra regains 5 hit points at the start of its turn if it has at least 1 hit point. If the Berrydra takes Fire or Acid damage, this traitss does not function until the start of its next turn.

Head Regrowth. If a head is severed, it will regrow 2(1d4) days later unless the stump is cauterized with Fire or Acid damage. It can survive with only one head.

Nocturnal Hunter. During dim light or darkness, the Berrydra has on Dexterity(Stealth) checks and Wisdom(Perception) checks relying on sight

Multiattack. The Berrydra do as much Bite attacks as it has heads. 

Bite. Melee Weapon Attack: +4 to hit, reach 5 ft., one target. Hit: 5(1d6 +2) piercing damage. It at least two bites hit the same creature in the same turn, the target must succeed on a DC 13 Constitution saving throw or have its spedd reduced by 10 feet until the end of its next turn from Bloos Loss and Shock.

Frenzied Feeding (Recharge 5-6). The Berrydra enters a feeding frenzy for 1 minute. During this time, its speed increases by 10 feet, it gains advantage on attack rolls against creatures missing hit points, and it can move through sspace occupied by Medium or larger creature. The Frenzy ends early if the Berrydra eats at least 5 points of fruit.