this guide will help you defeat the ice lakhrahnaz-advance boss. (level491)
to get there u open spell book and look for advance boss teleport. then choose lakhahnaz.
the best method to safely kill this monster is with range. it is required to have at least 99 range and defence. as this boss hits a max of 700-850. it use both mage and melee so prayers do not work well. here is a good set up.
also to kill it faster. i suggest to use a STEEL TITAN(99summoning needed)
now the spot i would suggest to range from is
item it drops 100% is recover special pot and super prayer pot- all thought i have no other drop information at this time.