Melee (0-156+) poisons you for up to 2 hp/turn, Life Drain Berserk (0-87+), Poison Berserk (Causes Freeze (8 hp/10 turns), Ice Ball around itself (56-87+), Close Range Eletrify (25 hp/3 turns), Self Healing (65-85 hp).
Damage Taken From Elements
At Yalahar, Sunken Quarter. When entering the Sunken Quarter step down from the underwater hill and head to south-east, there you should find stairs which takes you down to the boss. The boss is behind a sealed door, so make sure you have the access to that room.
Treat this boss exactly the same as you would treat normal Quara Constrictor, you can run around objects.