Cat-Man Mutation

Feline Agility. It has advantage on Dexterity saves

Inmutable form. It cannot be shapeshifted or transformed

Experimental nature. It cannot be charmed, frightened, incapacitated, poisoned, stunned or put to sleep.

Poisonous background. It is inmune to poison and it deals, for every attack, 1d8 poison damage.

Pounce. If the lion moves at least 20 feet straight toward a creature and then hits it with a claw attack on the same turn, that target must succeed on a DC 13 Strength saving throw or be knocked prone. If the target is prone, the lion can make one bite attack against it as a bonus action.

Claw. Melee Weapon Attack: +4 to hit, reach 5 ft., 1 target. Hit: 8 (2d6 + 2) slashing damage. 

Bite. Melee Weapon Attack: +4 to hit, reach 5 ft., 1 target. Hit: # (3d4 + 4) piercing damage. 

Reaction Name. Enter the description for your action.

Enter the description for how legendary actions work for your monster here.

Legendary Action Name (Costs # Actions). Enter the description for your legendary action.