Special Traits

Regeneration. The mutant regains 10 hit points at the start of its turn if it has at least 1 hit point.

Amphibious. It can breathe air and water.

Toxic Flesh. Any creature that hits the mutant with a natural weapon or bite attack takes 5 (1d10) poison damage.

Actions

Multiattack. The mutant makes a set of one of the following combinations: Bite + Claws. Claws + Tongue Double Claws

Bite. Melee Weapon Attack: +9 to hit, reach 10 ft., one target. Hit: 19 (2d12 + 6) piercing damage plus 9 (2d8) poison damage. The target must succeed on a DC 16 Constitution saving throw or be poisoned for 1 minute. The target can repeat the save at the end of each of its turns, ending the effect on itself on a success.

Claws. Melee Weapon Attack: +9 to hit, reach 5 ft., one target. Hit: 15 (2d8 + 6) slashing damage.

Tongue Grapple. Melee Weapon Attack: +9 to hit, reach 20 ft., one target. Hit: 12 (2d6 + 6) bludgeoning damage, and the target is grappled (escape DC 17). Until this grapple ends, the mutant cannot use its tongue on another target. As a bonus action on its turn, it can pull the grappled target up to 10 feet closer.

Reactions

Lashing Counter. When a creature misses it with a melee attack, the mutant can make one tongue grapple attack against that creature.