Ranging highly recommended. A friend of mine (combat 112) sara brewed up to defence 106, and got destroyed by it in her own words. I'm lvl 84, defence 51, and ranged it (cbow 8/10; ranging lvl 90) and used a total of 8 sharks. The trick is to keep away of it, so sometimes instead of running closer you just move around the edges. IF you have a 'For Glory!'-moment, run as soon as possible back to the edges. He can drain prayer with at least 20 points per hit - screaming something like I hate those Gods or something - so prayer is of little use.