Well, if you like AD characters a fun one is Pantheon. He can be a real beast. Kassadin can play a bit like Ez, if used right he can own some poor little people (Then again so can any champ. I once saw an AD Alistair. Dear Lord he owned. He ulted and got a quadra kill at a tower. 'Twas true beauty.) Malzahar can be a beast. He can be an annoying champ. But most of his attacks are singular targets. 1v1 he can be cruel. You might like Kog, Kog has some serious range and some serious damage, and when he dies he turns into one hell of a nuke, his drawback is that he is very squishy and kinda mana intensive. But you can play him AD or AP, with either I would reccomend getting an Archangels Staff or the Manamune Quickly. Either is well worth it for Kog. As for runes, I would reccomend finding out what kind of champ you want to play, read up a little on them and then buy some generic runes and Quints. Quints would probably be best if you got Hard health.
I usually play tanks or support, every now and then I'll pull out my nuke capabilities and pity some foos. But as a tank, my runes are really only useful early game. Once I hit mid game they don't do much for me anymore. So, if you are down and out on the IP you could play as a tank. And of course there is always IP farming. Every 24 hours you get 4 or 5(not sure which) practice games that gives you 71 IP each for winning. Usually only takes about 11 min per game if you are playing with 5 other champs vs bots, as 11min is the lowest time before you can get IP.
Hope this Helps some ^.^
I usually play tanks or support, every now and then I'll pull out my nuke capabilities and pity some foos. But as a tank, my runes are really only useful early game. Once I hit mid game they don't do much for me anymore. So, if you are down and out on the IP you could play as a tank. And of course there is always IP farming. Every 24 hours you get 4 or 5(not sure which) practice games that gives you 71 IP each for winning. Usually only takes about 11 min per game if you are playing with 5 other champs vs bots, as 11min is the lowest time before you can get IP.
Hope this Helps some ^.^
I seem to have lost my pie cutter.