The chaos element is north of edgeville in lvl 5 wildy.
You can use everything mage/melee or range.
D plate skirt
Impressive PK CAPE
Red spider egg's
eye of newt
Rune (g) (Sometimes quite rare drop)
What to bring:
Helm:any(highest magic defence possible)
chest: prob d'hide or barrows
Legs: D'hide or barrows
boots: rune, ranger, dragon
Gloves: cooking, barrows
Ammy: glory or fury
Ring:any(if admin+ p-ring)
Cape:PK CAPE,skill cape or legends cape
Food:Manta rays or sharks
Potions:super set anti-poison(pk'ers)and p pots(depending on how long your staying there)
Your best option, isd to bring a few mates along, just incase of pk'ers...
I would suggest your best combat skill... because he can hit hard.
thank you 1xiix1 for a little bit of help from your guide, thought i would update it a bit