Ahuizotl

Avoidance. If the ahuizotl is subjected to an effect that allows it to make a saving throw to take only half damage, it instead takes no damage if it succeeds on the saving throw, and only half damage if it fails.

Bite. Melee Weapon Attack: +10 to hit, reach 10 ft., one target. Hit: 22 (3d10 +6)

Constrict. Melee Weapon Attack: +10 to hit, reach 5 ft., one Large or small creature. Hit: 17 (2d10 +6) bludgeoning damage plus 17 (2d10 +6) slashing damage. The target is grappled (escape DC 16) if the ahuizotl isn’t already constricting a creature, and the target is restrained until this grapple ends.

Swallow. The Ahuizotl makes one bite attack against a Medium or smaller target it is grappling. If the attack hits, the target is also swallowed, and the grapple ends. While swallowed, the target is blinded and restrained, it has total cover against attacks and other effects outside the ahuizotl, and it takes 21 (6d6) acid damage at the start of each of the ahuizotl’s turns. An ahuizotl can have only one creature swallowed at the time.

If the ahuiztotl takes 30 damage or more on a single turn from the swallowed creature, the ahuizotl must succeed on a DC 14 Constitution saving throw at the end of that turn or regurgitate the creature, which falls prone in a space within 10 feet of the ahuizotl. If the ahuizotl dies, a swallowed creature is no longer restrained by it and can escape from the corpse by using 15 feet of movement, exiting prone.

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

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

Baby Cry (Costs 0 Actions). The ahuizotl cries like a baby to attract its pray.