Runescape Dragon Slayer help...?

I would suggest not to use magic, its the worst thing to use on a dragon. I would suggest you to buy full rune and use a rune b axe or scimmy with an anti dragonfire shield. to help you defeat elvarg use lots of str pots and bring lots of lobbys. with that you should be fine.oh yeah, also use ur prayer that should help u alot. Anyways, good luck! Hope this helped!