[{quoted}](name=A Miss Fortune,realm=NA,application-id=3ErqAdtq,discussion-id=ov3wXdwp,comment-id=0004,timestamp=2015-08-09T22:43:38.998+0000)
I used to main Sona before her nerfs and a while after them, which I believe was still during the time assassins pretty much fulfilled every role but Support.
I think Sona could use small buffs. While I will say that she's a surprisingly strong mid laner since her Q/Passive combo can literally one shot someone on top of Lich Bane, her Supporting ability isn't the best. I would say make her E stronger, lower the mana costs on her W, and also buff her W shield duration.
THIS, this is what i am talking about. Someone else who understands that her W needs to not cost so much early game and the shield needs to last long enough to actually block some damage if you aren't already in the middle of a fight when you use it.
I think she would be fine with like a 20 mana reduction in the rank 1 of her W, but the mana increase per rank should be up'd to 10 per rank instead of the current 5. Also the shield should probably last about twice as long, maybe make it add .5 seconds per ally you tagged if you don't want it to be a flat 3 seconds regardless. 3 seconds isn't super long, and even with full CDR you can't keep the shield up forever like say Janna with her's.
I would like to say though that she's in an odd spot when you look mid, she can be super powerful if you build her full AP, BUT with the limit of 1 damage spell outside of ultimate, it's really hard to handle creep waves until you get Lich bane. She use to be a powerhouse in mid, but that was because of her auras, higher base amounts on both damage and heal, and the fact that her spells were all on much lower cooldowns (i think they all got 2 second added to them when the rework happened). I could be wrong here but i think her powercord also use to hit for 200% damage if you had empowered Q up.