Miss Fortune
In this game the enemy team had a miss fortune support who was also behind,she started building damage really early and she was able to decimate the hp pools with simply ultimate, even though she finished her first damage item quite late At the very end of the game she was able to fountain kill us,who had full build, with only 4 items and half IE. As a support she also had highest damage on her team. I think Mf ultimate at the moment is not really healthy, and it's hard to counter if you die instantly.
got no idea if i posted the replay right so bear with me
Edit: i might be just salty and tired,can't really think straight and really stressed out from not being able to get the last S i need for tier 7 ahri