Lizardfolk

Creature Type: Humanoid
Size: Medium (about 6-7 feet tall)
Speed: 30 feet
Bite: You have a fanged maw that you can use to make unarmed strikes. When you hit with it, the strike deals 1d6 + your Strength modifier slashing damage, instead of the bludgeoning damage normal for an unarmed strike.
Hold Breath: You can hold your breath for up to 15 minutes at a time.
Hungry Jaws: You can throw yourself into a feeding frenzy. As a bonus action, you can make a special attack with your Bite. If the attack hits, it deals its normal damage, and you gain temporary hit points equal to your proficiency bonus. You can use this trait a number of times equal to your proficiency bonus, and you regain all expended uses when you finish a long rest.
Natural Armor: You have tough, scaly skin. When you aren’t wearing armor, your base AC is 13 + your Dexterity modifier. You can use your natural armor to determine your AC if the armor you wear would leave you with a lower AC. A shield’s benefits apply as normal while you use your natural armor.