To get 'rare' drops on PvP you need to risk more expensive items and stay in the hot zones. The more you risk and the longer you stay in the hot zones the bigger the chance of getting a 'rare' drop. Although it can take some time.
While on RuneScape PVP worlds, if you die, you only lose the items you are carrying, not those in your bank, never in RuneScape will a death directly affect your banked items.
Revenants drop on rare occasions degradable Pvp armor, like Vesta and Statius. Formerly, you could only get such a drop from other players in Bounty Hunter and PvP-worlds. The drops are worth a lot, and if I'm not mistaken, the Vesta longsword is currently the most expensive at above 30m.
Your skull will go away after spending enough time away from a PVP area.
Cows and chickens.
Earning Potential in pvp 100ep will get you better drops than say, 50ep
You risk more items yourself, the more you risk the more you get. You get good drops if you are risking 25k or more on a pvp world. This means that you would lose it if you died, and it is not protected by the protect item prayer. There is a great guide on how to own in Pvp worlds here: http://www.gameolosophy.com/Games/Online/RuneScape/How-to-Own-in-Pvp-Worlds-in-F2p.538733
Corrupt dragon items can only be obtained by buying them or by rare pvp drops.
Out of most the people who pvp are pures. It really matters if your defense is good and if you have good range level and the armor helps a lot.
in pvp worlds, that isn't really an achievement, that just shows your too scared to risk, meaning lame drops.
To get 'rare' drops on PvP you need to risk more expensive items and stay in the hot zones. The more you risk and the longer you stay in the hot zones the bigger the chance of getting a 'rare' drop. Although it can take some time.
on the pvp/bounty worlds
I have placed a link below that should take you to a site that should be able to answer your question.
Before - PvP was taken away meaning that you would have to go on to a bounty or PvP world to kill other players, and that the drops were very limited.Current - The old Wilderness has been fully restored and is a dangerous place again, meaning if you kill someone you get their items instead of set items.
yes
There are no banks in PvP zones but there is a safe of keeping 3 items UNLESS you are skulled.
Scamming, pvp, pvm, dueling, & merching.