Prayer a bonus is not a must? It IS A MUST, especially for lower levels. Picture it this way, if you have +100 magic bonus, and it doesn't kill any faster than having -10 Magic Bonus, then WHY on earth should you bring something that DOESNT make a difference? It is a plain waste of money. Prayer Outfit however can mean that your prayer can survive one more drain. That is VERY important for money purposes meaning that you do NOT have to drink unnecesarily. I tried Mage outfit, and prayer outfit, and guess what? On average, the mage outfit saved me 5 casts, but wasted me 2 doses of prayer more than prayer outfit. do the math : 5 magic dart costs at most 2k, 2 doses costs more than 4k, so i have lost 2k every run. This is an unnecessary loss. Sure one could argue that 2k per run isnt much, but why waste the money when you can save it. Also i ran out of prayer more often at the wrong times with mage outfit than prayer. By the way, for the question about the chain, you can replace it with rune plate, but you need to bring d hide as well, because rune plate incurrs ranged penalty. the only reason why chain is in there is that there is no ranged penalty and gives good melee defence down in the tunnels.