Swamp Adder

Swamp Camouflage. The swamp adder has advantage on Dexterity (Stealth) checks made to hide in swampy terrain.

Bite. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 1 piercing damage, and the target must make a DC 11 Constitution saving throw. On a failure, the target takes 5 (2d4) poison damage and is paralyzed for 1 minute. On a success, a target takes half the damage and isn't paralyzed. The target can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success.