Hardest Champ

Lots of factors go into 'hardest'. Hardest to pick up is going to be different from hardest to master, and both of those can be separate from mechanically difficult and strategically difficult champions.

He's made of solid steel.

Steel is pretty hard.

Azir...isn't really that hard I M O.

Warwick. It's pretty damn hard to keep track of all those AA stacks.

riot likes to call any champion they put a shit ton of effects on mechenically intensive and needs to know when to use their skills as if champions cant just throw out all their skills and which ever ones take effect take effect not as if the danger of the other skills aren't something to cause your enemies to be wary even if they dont hit like they are supposed to

For me, the hardest champions to learn comprehensively have been Lee Sin and Azir. People say that champs for whom micro-managing is important ( ) are the hardest, but I think that's more about proper/optimal positioning than anything. I just think that it's hardest to play Azir or Lee Sin to their best ability.