Everyone thought kayle was dead after the nerfs and what not but shes just fine. Actually shes pretty freakin broken if you know what you are doing.. She's super easy to play, super easy to farm with, does alottt of damage and has alot of utility. You pretty much just want to either harass your opponent or just farm if you show up to lane with 200 cs at 15 min you can 1v5 no problem. With Nashors you can 1v1 anyone and with runnans you can start to 2v1 people unless ahead early obviously.

pro's : long range, utility, sustain, invulnerablity what else do you need?
con's : can be squishy if you cant position well