Versatile Champions?
I'm still pretty new - have tons of champions that I haven't played (always bought those champ bundles!), lots of interest in playing, and I feel like I have a decent head on my shoulders for grasping meta-concepts and theories, but I'm going into overload. Too many champ choices, not enough focus.
So I come to the community for help! I want to learn a small handful of champs well. Like, REALLY well. I'm SL 19 right now, and I'd like to have a versatile few champions that I can consider to be my go-tos when I hit 30. I'm hoping 10 levels will be enough time to learn the champs and save up enough IP for the runes I'll need.
What champions have the potential to fill a variety of roles decently? As an example, I love the playstyle and abilities of Rek'Sai, but I feel he's only viable in Jungle (and I don't want to corner myself into being only usable in one role, much less with only one champion). If it helps, I love Support and Jungle. Helping other people out and setting them up for snowballing is always something I've enjoyed, and both of those roles seem to fill that niche.
In higher-ranked play, is it considered "fair" to only know one role really well, or is everybody expected to excel in multiple roles?
for example
for example
comes to mind when I think of role versatility. He can top, jungle, or mid. But I recommend you learn at least one champ specific to the given role. I find taking a champion to a different position leads to a very different style of play with them anyway. Junglers and supports even use their own specific item builds.
Top, Mid and Support.
Top, Mid and Jungle
Top and Jungle
Top, Mid and Jungle
Top, Mid and Jungle
Top and Mid
Top and jungle
Top and Mid
Top and Jungle
Top and Mid
Top, Mid and ADC
Top and Mid
Mid and Support

Positions: Jungle/Top/Bot/(Mid?) - top/jungle and bot lane thresh have been seen before, but his kit can theoretically work mid too.
Roles: ADC/Support/Tank/Bruiser/Initiator/Jungler/ (AP?)
Can do everything but ADC. She can be AP bruiser top, AP mid, AP support and can even jungle. And she's simple to learn and not that expensive.
Expensive champion, but can do 4 roles: top, mid, ADC and support. Support is her best role. She has a lot of utility in her kit and her glitter lance has some incredible poke damage.
Another expensive choice. Usually goes jungle, but can go top or support too. Even when he goes support and builds only tanky items he hits HARD. And his passive allows him to survive anything nearly anything short of a coordinated burst attack from the enemy team. He's deceptively strong in the current meta, but metas change so don't buy strictly for whats good now.