Don't be shy to ban Blitzcrank.
every few weeks. I start to perma ban blitzcrank in every game I play whenever i see his playrate goes up. and trust me. blitzcrank is literally the best support in the game right now. he has the 2nd highest banrate in Diamond.
hes strong. if you struggle against him or think others do. ban him. hes a cheez champion that is very hard to lane against once he gets a kill or two and its not hard for him as a pull is a guarnteed summoner or two in the 2v2 if not a kill. at level 6 it usually is.
ban him