You can get yourself Magic and RuneScape gold Ranged armour and weapon sets (ie Armadyl armour Mystic robes, Toxic blowpipe and Trident for the swamp), casting runes, food (we recommend shark and monkfish) combination food for gaming purposes Anti-venom, ranging, prayer and magical potions (for the latter one, alternatively imbued heart), ring of recoils or some other form of teleportation like Home Tablet as well as last, but certainly not the least, runes for the The Vengeance spell.
To unlock the challenge, you'll have to be at Port Tyras in Regicide questline. After this, you'll be required to offer yourself as a sacrifice to the High Priestess Zul Harcinqa, after that you're ready to go and try your luck against the serpent god.
The final boss of Dragon Slayer II quest chain using the correct equipment, stats and bit of skill is able to be killed thirty times per hour . That's insane quantities of runescape 3 gold gold an hour.