Have you ever got so annoyed in a renevant that you wished to quit? Don't you hate when you are attempting to Abyss Runecraft and RS gold you get killed by a renevant? And here is my thought. The ability to conquer renevants from Level 7 to Level 156 (sorry, I do not know, correct me if I am wrong) Past the Mage Arena where all of the PKer's used to be.
To start: Talk with Kolodion (yes, he is here) to start the Renevant Challenge. He'll direct you to the Arena, which looks like the Mage Arena in a way, but looks newer than the Arena. After that round, then comes the level 61-100. After that round, you fight the remaining renevants. In case you have a range level of 70, Kree'arra will come. If you have a Strength level of 70, then Graador will come. In case you have a Prayer Level of 70, Tsutsaroth will come. If you've got a Hitpoint level of cheap OSRS gold 70, Zilyana will come. In case you've got all 4, then 1 of them will come at random.