Grimalkin

Keen Smell. The grimalkin has advantage on Perception checks that rely on smell.

Claws (True Form Only). Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 6 (1d6+3) slashing damage. If the grimalkin moves at least 20 feet straight towards the target before the attack the target makes a DC 12 Strength saving throw falling prone on a failure.

Bite. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 5 (1d4+3) piercing damage.

Opportune Bite (True Form Only). The grimalkin makes a bite attack against a prone creature.

Shapeshift. The grimalkin changes its form to a Tiny cat or into its true form, which resembles a panther. While shapeshifted, its statistics are unchanged except for its size. It reverts to its true form if it dies.