How to counter Seraphine
Let us take a look on how to beat Seraphine. We will look at champions who are strong against Seraphine and who are weak against Seraphine. Use win rate, gold difference and creep score difference at minute 10 to find the best 
Adc champion who counters Seraphine. You can already win in champion select with the right counters for Seraphine. If you want to know how to counter Seraphine then you need to take into account the best picks vs Seraphine and the worst picks vs Seraphine. This Seraphine counter data is based on matches played by Pros on patch 13.24 and previous ones. It is important to see whether Pros counter picked Seraphine or whether they played as Seraphine.
Champions used by Pros to counter pick Seraphine
Looking at the matches from Pros (see table Pros counter picked Seraphine) we can see that they picked 
Kai'Sa most often to counter pick Seraphine. The matchup Kai'Sa vs Seraphine occured 23 times. Seraphine has 16 wins and 7 losses in this matchup. Learn how to counter pick Kai'Sa to get another perspective on the data.
Lane outcome for Seraphine
When looking at Seraphine counters you will notice that win rates alone are not conclusional. Therefore we provide an overview (see table Lane Outcome) where you can see the lane outcome of Pros who played Seraphine. The lane outcome of Seraphine consists of three outcomes: Win, Loss or Draw. Let's take a look of Seraphine lane and match outcome for specific matchups. Considering the lane outcome and the match outcome of a specific matchup, might enable you to find the right counter for Seraphine.
Conclusion
Analyze the available data and learn how to beat Seraphine. To master Seraphine take also a look on Seraphine builds and runes for Seraphine. Good luck, Summoner!