Try this ring from dungeon skill - ring of vigour or how its called - just need to get some tokens for it. Of course if you wont spend money for zerker which is best u can use for slay and later enchant it via mobilising armies avtivity.
How about runes save ability - chaotic staff have it ? Even if its 1/8, stacking with battle robes to 1/2 its always something worth to take into calculation.
ZMI it. Cost of runes - required for teleports - can be reduced by crafting them by yourself, via abbys or rc guild tabs. If you dont like crowds and want also use familar, while in ZMI world use glorys/dueling. Just load pounches and go runecraft. Its hard skill but if you want it so bad you need make some effort ;)
They arent tradeable so for your use only, and if you can use them and get even slighty profit do that. That will cost you nothing than time which you use to create them - while gaining some xp to other skills.
I know only that you need it during this quest, and later purpose is ability to use feather for potions - so no problem to get full backpack quick via thieving them.
You can also craft fire runes its easier that switch between your main weapon and staff. So its coniformed that celestal mages drop those boxes, right ?
Well in some cases save-ability of seconds can be great but how about extreme magic potions, where ground mud runes cost almost nothing ? :) Im glad thats nice addon to herblore skill but seems to be semi balanced for me. Anyway its better to have it rather than not.
Grow it to mature form by feeding him regulary and playing with use of ball of wool. During any regular skill, as i remember it take 4 hours to full grow but can be wrong.
Well game anyway warn him that he need 93 slayer to buy this skill. And if u cant or dont want ( like me ) kill Jad, just buy later this ability - see nothing wrong in that ;)
Herbicide'n'Bonecrusher as a combo on Chaos Druids ;) Well in long term its good invest, u save few gps on those bones. Think also about Gem Bag, with ring of wealth which increase gem drop it can nice addon to tasks.
I`ve just run through whole island - especial spam-scanning in places described at guide, tried 3 caves, rune-ore island and all bridges around island. And still cant find it. Anyone have experiance with that, and could me explain ? Trolls are really annoying there.