Sion
he feels to clunky atm he is not weak but nor is he strong or contested pick his health scaling is mediocre perhaps if you buffed that and gave him something to do inbetween his cool downs he would be alot stronger maybe on hit damage after he uses moves for a duration based on HIS max health .
and synergy with
so sion would q then get his next basic attack to do damage = to % of his max health or oppenents missing health maybe make it a new passive. below i entered a pole to see if they would like sion to get something to do inbetween his cool downs
so sion should get increased health from minions as the game goes on like from level 1 its 2 health but as the game goes on longer make it 4 or 5 then a passive perhaps replacing his old one or adding to his ult on hit damage based on his max health and or opponents missing health after each spell cast