Why Blitzcrank is OP

Blitzcrank is OP. I will say that first, and that should be enough to say, but I'll expand on it.

Blitzcrank is OP, not on his own, but backed up with any adc, he is. He is useless by himself, you will get pummeled. Pull someone, get your adc and the blitz to both gangbang the stunned target, it is really not on the victim's side. He gets a sheild that heals a lot of his health when he is low a speed boost, an ability to throw in the air, a grab and stun, and a bolt that can last hit.

He is impossible to kill in team fights. Lets say he pulls a vayne in. They all attack vayne, she is dead right away. They all go in now, and one of them targets blitz. He throws them in the air, gets his shield when he gets low, and trolololols away. He is the deciding factor in laning, which lane will win. Obviously his. In team fights, if the other team isn't cautious about every step they take, they will get grabbed either into a bush with the adc or into the entire team. Usually resulting in a win for team blitzcrank.

I was in a game with a blitz as my supp, I got 20+ kills. I just faced a blitzcrank, 10 deaths and reported for feeding. Blitzcrank is so game changing, that he is OP.