Who are strong champs and who are weak?
.
.
It depends on how you want to play. If you are just doing solo playing then your list is not going to be long. If you plan to play with real teammates then your list will be very long. There are strong champs just for solo Q, and then there are way more strong champs for real teams.
Solo Q I always pick these.

Here is why I pick these champs always for solo Q
She may have short range, but she makes up for it in raw burst. Once you get
you will start to insta kill many players, and if you can time the combo correctly with teammates next to you then you will more then likely win the team fights. Plus most games your teammates will not work with you. So you have to rely on your self and your choices in order to carry.
This champ is great because there spells are on low cool down, two of the spells are for cc, and her ult is on low cool down. Most matches your teammates will not work with you so this champ allows you to play safe and not have to worry about being deep into the fight.
This champ can solo any lane. The Goal of playing this champ is to get all your items. Once you get
Your traps will do so much damage, and you want to trap the lanes to stop the enemy from pushing. I can't tell you how many times I have turned matches around with this champ. I have had the worse team on the planet, and still turned the game around because I trapped the lanes, and stopped hard pushes. The
can not stop the traps from being thrown. And to counter the
all you have to do is place the traps further apart because the lens does not last that long when they use it. The lens will only work great if the traps are all piled together. This champ is also OP if you master the Fog of war, and time your passive correctly.
This champ is also very safe when playing with teammates that you can't rely on. His ability's also don't have a very high cool down. His passive is one of the best in the game because his passive is true damage. So if you combo your Q,W,E,R in a team fight and hit many of the enemy players you will do so much damage even if many of them are tanks. The down side to this champ is you don't have any kind of eceap. So only combo if your team mates are really close to you so you have a chance of staying alive after the combo so you can repeat the Q,W,E.
This champ is the only tank that is good for solo Q. His W passive will keep your health going up if you can keep killing minions or jungle camps. So you can permanently get 3k health just off his passive if the game goes on long. His main passive is not good for team fights. You should only use his main passive for taking out towers. That is the goal of his passive. To just push the lanes hard and take out towers fast. There is too much CC in the game to use the passive for team fights. You will find that out the hard way. His Q is great for keeping the enemy were you want them to set up your ult. Most of the time you will use your ult to get away, but Once in a while you will get the chance to use your ult for a great engage, but it won't happen a lot. This champ can solo towers if he gets a good lead, and your teammates are not good in team fights.
This champ is great for support. because his E can hit more then one person, and they are silenced. So it can screw up the enemy's team fight. His ult can be a game changer, but you have to time it right other wise you will just feed. You want to wait til players are low enough before using it. This champ is good for solo Q because if the your team mates are not great you can just pick off the enemy with your E and ult.
This champ is a good for solo Q because you can get one of your teammates very fed, and her Q slows a lot. How ever its her W, and E that will get one of your team mates fed hard because it gives a shield, and it increases your team mates attack speed by a lot, and it matches with
Most of the time you want to follow who ever you want to get fed. This champ can make a
into a monster because of how fast you can attack with darts. Its scary. The down side to this champ is if your team mates don't want to fight then your pretty useless and you will waste your mana giving your team mates buffs.
Like I said in the post though. It depends on how you want to play. If you are only doing solo Q or you are going to work with real friends as team mates.
So it'll vary a bit on your comp and items a bit.
Weak(or weakish):
is typically weaker when it comes to sorc/wild
is meh, but it varies a bit on the comp and build. He is typically easy to get a 2 star and 3 star early on
is semi strong at the start, but she can fall flat a bit towards the end. However, the right items can easily adjust this problem. So usually if you plan to stick with Trist, you certainly want to build items on her
can be a wee weak, but he usually is better with a elementalist comp. I find placing him somewhat middle of the champs surrounding him helps with his ult a bit since its a large crowd control ability.
I don't know why, but I never have much luck when I build kass. I've seen people build him well, but I can't. I wouldn't say he is weak, I guess it just varies, but he is typically easy to get a 2 or 3 star early on.
with graves it varies. I've had decent luck, but some say he is weak. I think it depends on his comp and items. Usually running red buff on him is good and I find building him mostly around gunslinger is better.
TF is probably one of the weakest in general. While its great he can restore some mana for everyone near him, that's all he can do. Really only good at the start to help a pirate or sorc comp, but generally better to replace later
She generally falls in the meh. She can be good, but she can be meh and I think it varies on items as well. I find red buff seems to help her a bit, but I generally don't like to grab fiora that much unless I want her to help with nobles.
she is generally annoying when she gets into her spider form with her spiderlings, but she can also be semi weak as well. I personally haven't done well with Elise on my comps, shape or demons. I'm not sure if its because she just needs health/tank items, but I don't consider her that strong. Again, she is pretty easy to get a 2 or 3 star early with
Darius is kind of meh. He is ok with knights, but he is better around Imperials for damage
Strong:
Aurelion Sol is a great sorc to get, specially when he ults which can take out a nice chunk of damage if he is placed right. He also pairs nicely with
and generally if you tend to pick up Shyvana, you will certainly want to pick up Aurelion Sol as well.
Atrox can be a beast to deal with. His ult can wipe out two champs at times or at least do a nice chunk of damage. Before demons got nerfed, he paired nicely with them, but now that demons are nerfed, he does alright, but he is better to run around blade if you do.
Brand is pretty strong and is an essential to running elementalist. Basically only really pick up brand if you want to run elementalist. Meh with the demon nerf.
Eve is great with assassins. She can do a nice chunk of damage and really better to run around assassin with
Morg is one of the best to run if running around sorc. Her ult is nasty and really she is nice to run, even if not planning a sorc comp.
Swain is evil, evil in the sense that he does nice damage and can tank a wee bit, but not much. Basically he is great for Imperial and shape shift, but getting him to 2 or 3 star is a challenge as you can't pick him up towards end game anyway.
Varus is deadly when building certain items and really good to have in the back line and as a ranger.
EVERY GLACIAL IS EVIL...but...
is somewhat weak, but it varies a little bit. I would say she is roughly in the middle in terms of how strong she is.
As the league of Draven, Draven is strong. You can build him around blade or Imperial and he will do just fine.
Katarina is nice as an assassin and works well with assassin comps, but I would put her towards the middle as there are better and stronger assassins then her.
is can be damn annoying. She is strong in the sense that she can hit multiple champions and ninja and assassin comps work well with her. She is a high pick for ninja or assassin for sure.
Zed is a terror, specially running certain items like Zerke's. He is easy to get usually can be 2 or 3 star pretty early as well.
I would say he is in the middle. He is ok for blade and his doge is nice, but that's about it
.... this is taking too long to go over every champ so... yeah....