I was never really good at Shaco and I don't play Mundo very much. I've tried a few different champs so far thinking that they'd be good in ranked but so far, have not made progress -_-. I don't play support in ELO hell cause the last time I did, I had a fail AD carry with me. He had about 35 minions by the end of the game and I had 22 as Janna :/.
Also, hard to play Shaco in ranked. A lot of the time, he is banned.
Oh I know who I should play in ranked! I should play Windamere. I tend to win a lot when I play him. I just can't jungle very well with him. I can't really jungle the AD champs very well xD.
The only champ that I'm good at jungling with is Amumu. Last time I jungled in ranked, I had a fail ass Vayne who kept bitching at me because I didn't ban Shen. I banned Singed, Rammus and Tryn. They kept saying "why would you ban Singed?! Ban Shen!" or the first thing they said when they got into the game "First Shen Kill" or something. I don't think they were fluent in English.