Possible New Summoner Name Help!

Ok so I have a tone of IP atm and don't really know what to do with it, so I thought maybe a name change? The problem is I don't really know what to do, the "Vicarious" names with a number are really the only names I use atm, and then my gamertag on xboxlive is "Dusk at Dawn," but that's most likely taken on LoL already :P

So I thought maybe a name related to one of my mains? I main Rengar, have since I first bought him mid season 3, so a Rengar related name would be cool, but I need your guys' help for this, any ideas? Most I can think of are either too predictable or simply lame lol

The other option is an Aatrox related name, I was thinking somehow using "Darkin" in the name, like "The Darkin Answer" or something cheesy like that, but idk really, I'm not in a creative mood atm :/

So any help on possible names would be greatly appreciated! Or even if you think I should just keep my current summoner name and Tool reference then say that as well, I'm all ears to anybody willing to lend a hand :)