As An Old Xerath Main, Preseason Buffed Him Too Hard
54% win rate currently.
Long story short, removal of early MR + damage from runes + snowbally game has created a champion so completely oppressive in the early game that he easily snowballs a match. I've had far too much success with him lately (and lost to far too many Xeraths) to call him balanced at this point. His buffs from last season should probably be reversed.