Shapechanger.

The werejaguar can use its action to polymorph into a jaguar-humanoid hybrid or into a jaguar, or back into its true form, which is humanoid. Its statistics, other than its size, are the same in each form. Any equipment it is wearing or carrying isn't transformed. It reverts to its true form if it dies.

Keen Hearing and Smell.

The werejaguar has advantage on Wisdom (Perception) checks that rely on hearing or smell.

Pounce (Jaguar or Hybrid Form Only).

If the werejaguar moves at least 15 feet straight toward a creature and then hits it with a claw attack on the same turn, that target must succeed on a DC 14 Strength saving throw or be knocked prone. If the target is prone, the werejaguar can make one bite attack against it as a bonus action.

Actions

Multiattack (Humanoid or Hybrid Form Only).

In humanoid form, the werejaguar makes two scimitar attacks or two longbow attacks. In hybrid form, it can attack like a humanoid or make two claw attacks.

Bite (Jaguar or Hybrid Form Only).

Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 8 (1d10 + 3) piercing damage. If the target is a humanoid, it must succeed on a DC 13 Constitution saving throw or be cursed with werejaguar lycanthropy.

Claw (Jaguar or Hybrid Form Only).

Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 7 (1d8 + 3) slashing damage.

Scimitar (Humanoid or Hybrid Form Only).

Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 6 (1d6 + 3) slashing damage.

Longbow (Humanoid or Hybrid Form Only).

Ranged Weapon Attack: +4 to hit, range 150/600 ft., one target. Hit: 6 (1d8 + 2) piercing damage.

Werejaguar