You must master at least 10 champs before playing ranked.
However, I'd extend that list to 14.
My advice: Top Main Counter for a common counter to your Top main Counter for your top main Top Tank (If your main top is a jungle Mid main Counter for a common counter to your Mid main Counter for your Mid main Jungle Main Other Jungle (If your jungle main is a tank, a non-tank) ADC Main Backup ADC (for use against your ADC if they pick it) Main Support Backup Support
So my list would be: Gangplank Rengar (Beats Pantheon) Pantheon (Beats Gangplank) Singed Malzahar Mordekaizer (Beats Diana) Talon (Beats Malzahar, and also is useful as a counter to plenty of other mid champs) Hecarim Rengar Graves Urgot Taric Sona
Though, I add some other choices to the list in order to abuse opponents mistakes when banning (Shen, Maliphite), and to counter common champs (Vlad against Maliphite/Shen. Jayce against Darius/Shen, Kassadin against various mid champs, Renekton against various top champs, Warwick when he has synergy with lane) --- PSN:omegamarth. I play fighting games. Washington Redskins 10-6 Baltimore Ravens 10-6