Title explains it all. If you haven't read the 4.04 patch notes yet, you should have seen that they nerfed Viper. They decided to make most of their changes to her wall and smoke and not her mollies, despite them being the most busted part...

Haven Reyna, who has no mic and does not use the text chat, has grabbed the spike. Reyna trots up and down spawn, stopping at the entrance to every site. Me https://i.imgur.com/SyVyxPt.png