Akhlut

Amphibious. The akhlut can breathe air and water.

Echolocation. The akhlut can't use its blindsight while deafened.

Keen Hearing and Smell. The akhlut has an advantage in Wisdom (Perception) checks that rely on hearing or smell.

Frozen Heart. The akhlut gets a +1 bonus to all non-combat rolls in extremely cold weather.

Multiattack. The akhlut is able to make one bite and two claw attacks or it can make two tail attacks.

Bite. Melee Weapon Attack: +7 to hit, reach 5 ft., one target. 2d8 + 6 piercing damage.

Claw. Melee Weapon Attack: +4 to hit, reach 5 ft., one target. 1d10 + 4 slashing damage.

Tail. Melee Weapon Attack: +5 to hit, reach 10 ft., one target. 2d6 + 4 bludgeoning damage.

Cold Breath (Recharge 5–6). The Akhlut exhales an icy blast in a 20-­foot line. Each creature in that line must make a DC 12 Dexterity saving throw, taking 2d12 cold damage on a failed save, or 1d6 cold damage on a successful one. after use it adds +2 to its next bite attack

The akhlut can take 2 legendary actions, choosing from the options below. The akhlut regains spent legendary actions at the start of its turn.

Resonant Blast (Costs 2 Actions). The akhlut lets out a blast of sound in a 40-foot cone. Each creature in the cone must make a DC 16 Constitution saving throw. On a failed save, a creature takes 4d6 damage and is deafened for 4 minutes. On a successful save, a creature takes 2d3 damage and isn't deafened. Creatures and objects made of glass or crystal have a disadvantage on the saving throw and take 8d12 damage instead of 4d6.

Read Thoughts (Costs 1 Action). Akhlut can read the thoughts of any creature it sees and learn the next move they will make. with this information it can avoid the attack entirely or take half damage but take an opportunity attack.