If there was such a glitch that would generate this, Jagex would have already fixed it by now. Though there was an item duplication glitch in the past, it has long been gone.
You get to wear the dragon breath shield and you also get to wear a rune plate body instead of a rune chain body. I think that these are the only perks
To get the rune platebody, complete the quest Dragon Slayer. Then talk to Oziach in Edgeville. He is in the last house if you go in to Edgeville from the Grand Exchange.
a plate body? you either make it by a smithing skill or you buy it from the Grand Exchange.
Probably the Rune battleaxe, though the Warhammer is slightly stronger against plate armor.
The maker of Runescape by the name of Andrew. Rune is a made-up material that is ONLY used in runescape
Rune Pickaxe - 18,145gp - 20,055gp
F2P: Air rune Earth rune Fire rune Water rune Body rune Chaos rune Cosmic rune Death rune Law rune Mind rune Nature rune P2P: Dust rune Lava rune Mist rune Mud rune Smoke rune Steam rune Astral rune Blood rune Soul rune Extra: Rune Essence(F2P) Pure Essence(P2P) As you can see there is quite a few -Dd_rulez
on non members the best armors to protect from melee are plate armors, or chain mail. on non members the best one you can get is rune plate.
Rune berserker no question. Rune Spike is worst, 2nd is rune kite, and best is rune berskerker.
You use rune essence/pure essence on a altar. (runecrafting)
Mithril, possibly Rune (rune is a sort of greeny-blue)
Rune Med-Helmet.