Baby Hunter Beast

Blood Frenzy. The Beast has advantage on melee attack rolls against any creature that doesn't have all its hit points.

Innate Spellcasting. The Hunter's innate spellcasting ability Wisdom (Spell save DC 15, spell attack +7). The Hunter Beast can innatelally cast the following spells without requiring material components.

At will: Animal Friendship, Aura of Vitality, Hunter's Mark.
1/day: Polymorph, Commune with Nature, Destructive Wave, Guardian of Nature, Wrath of Nature

Legendary Resistance (1/Day). If the Beast fails a saving throw, it can choose to succeed instead.

Multiattack. The Beast makes two attacks: one with its bite and one with its claws.

A Thousand Fangs. Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 13 (2d8 + 4) piercing damage and it heals 1/4 of the damage done and the target must make a Constitution saving trow DC 15, if they fail they suffer one bleeding, if they pass nothing happens.

Bestial Claw. Melee Weapon Attack: +7 to hit, reach 10 ft., one target. Hit: 7 (1d6 + 4) slashing damage and the creature must make a Constitution saving trow DC 15, if they fail they suffer one bleeding, if they pass nothing happens.

Change Shape. The Beast magically polymorphs into a humanoid or beast that has a challenge rating no higher than its own, or back into its true form. It reverts to its true form if it dies. Any equipment it is wearing or carrying is absorbed or borne by the new form (the Beast's choice).

In a new form, the dragon retains its alignment, hit points, Hit Dice, ability to speak, proficiencies, Legendary Resistance, lair actions, and Intelligence, Wisdom, and Charisma scores, as well as this action. Its statistics and capabilities are otherwise replaced by those of the new form, except any class features or legendary actions of that form.

The Beast can take 1 legendary actions, choosing from the options below. Only one legendary action option can be used at a time and only at the end of another creature's turn. The Beast regains spent legendary actions at the start of its turn.

 Hungry Maw. The Beast makes a thousand fangs attack and heals an extra of half of the damage done.

Hunter's Stride. The Beast moves up to 50ft and at the end of its movement it does a claw attack.