I just played a bot's game and for the first time I used 
he was so much fun to play, he was tanky and still did a lot of damage.
I haven't seen this champion being played in bots or in ranked games and I was wondering why, what are the Pro's & Con's of playing this champion?
Because the jungler role exist.
On a serious, honestly because of how is he is to camp. Only champion in the game to lack but mobility or CC so early game, when that shield doesn't mean all that much besides one or two spells gone, two people ganking him, both mixing their various kinds of CC, he just can't handle it, either he dies or burns flash then you gank him again and continue to punish him for free.
He needs real rework - like they did with Sion...
He is very weak to early ganks. And morde will ALWAY push the lane. After lvl6, you may be able to 2v1 them, depending of the situation.
1- his model looks bad and skins don't help much (and animations) 2- no mobility to engage OR escape 3- short range, medium cooldowns spells make him not so great in poke situation teamfights 4- no CC of any kind
Pretty much everything Noctius said, though don't think his visuals are a real issue.
The no CC is a big one when coupled with the no mobility. You can get away with one or the other, but having neither is almost instant no play right now. Is damage is decent, but it is all burst and zero sustain (I don't mean sustain in the healing way).
He just has all the factors at once that makes for someone you don't want to play outside of normals.
