Artio
Artio will spawn to the south of the den, right in front of the exit. If you wish to avoid player killers, it is recommended to place a secondary account waiting outside the entrance to scout potential threats. All players who enter the den will spawn to the north, similar to Callisto's lair.
Artio uses highly damaging melee attacks and is weakest to magic and ranged attacks. Ice spells will land often even with minimal magic gear, binding her temporarily. If she cannot attack with melee, she will begin using a much weaker ranged attack until she can reach her target. Artio will occasionally launch a white orb at her target, which should be protected against by switching on Protect from Magic or risk taking up to 50 damage from the attack.
Upon reaching 66% and 33% of her health, Artio will roar, launching bear traps all across the arena.
Guide, gear, inventory, locations, pictures and money making rates from the OSRS Wiki (CC BY-NC-SA 3.0).