Hey,
Finally, I know how to counter them. 1stly, we have to pick SIVIR as ADC while for SP is MORGANA.
Seriously, this is gonna be cool..
Morgana q so op to against vayne and Sivir q op too. Its superb burst.
Btw, when Blitz pull Morgana, she just open ulti and use Zhonya. /gewd
That's all.
Good luck.