Swimming speed: Lizardfolk have a swimming speed of 30 feet.

Bite: Lizardfolk's fanged maw is a natural weapon, which they can use to make unarmed strikes. If they hit with it, they deal piercing damage equal to 1d6 + Strength modifier, instead of the bludgeoning damage normal for an unarmed strike.

Hold breath: Lizardfolk can hold their breath for up to 15 minutes at a time.

Natural armor: Lizardfolk have tough, scaly skin. When they aren't wearing armor, their AC is 13 + Dexterity modifier. They can use their natural armor to determine your AC if the armor they wear would leave them with a lower AC. A shield's benefits apply as normal while they use their natural armor.

Hungry jaws: In battle, Lizardfolk can throw themselves into a vicious feeding frenzy. As a bonus action, they can make a special attack with their bite. If the attack hits, it deals its normal damage, and they gain temporary hit points (minimum of 1) equal to their Constitution modifier, and they can't use this trait again until they finish a short or long rest.

Swamp camouflage: Marshscale can attempt to Hide even when only lightly obscured by swampy terrain, fog, or foliage.

Amphibious intuition: Marshscale have advantage on Survival checks to track or avoid creatures in wetland environments.