what do you do if riven gets fed

come back on the forums after you lose and make a rage thread about her

you know, the usual.

surrender at 20

Pray.

If you are a tank build armor she is very bad against tanks and some bruiser or u can play champions that stomp riven regardless of how fed she is vlad is a good example or somone with shields

As a mid main, I will hit her with my spells and if she comes close-my frontlane will hold her for long enough time for me to kill her. Or, if I somehow am playing a support-Morgana hits her Q and Riven can't cast her Q/E so she will die easily, and Soraka just throws silence on Riven when she is close to ADC so she can't use her spells, and if she does not run away-she will be rooted and still not able to cast Q/E

If you have fiora you spam taunt and win free, then again if you have a fiora riven will never get fed.

You literally have a point click cc on her. Then everyone focuses her for 1 second. She blows up.

Build armour and wait for her to fall off in team fights.

Stand in a fountain corner Try to not cry Cry a lot

Then remember you are amumu and crying is fine, then gank her with your teammates! This is a multiplayer game!

If you can' t manage to get a gank, gank other lanes and manage to have an higher impact overall in the game: that won't stop her but will make you stronger.

Hope that your team is smart enough to understand that she needs to be taken down if she comes too close.Don't go on a full fight with her team,force her to chase you.And frankly,Riven can't do much without flash in teamfight if you are reacting well.Of course if she's super fed...she will be hard to deal with but almost any champion will be if your team is so behind.