League of Legends Katarina players will find her to be a complex character to build out properly. You'll notice that her build changes when she is up against either well-rounded or homogenous team compositions, showing you should not take the same Katarina build every single game of League of Legends
The most critical items to use in your champ's build include: Ceinture-roquette Hextech, Coiffe de Rabadon, and Fléau de liche. Those who included these items in their setups had a better winrate than those who tried for other builds for Katarina. Moreover, if you are playing a mixed enemy team arrangement, you should really consider grabbing Katarina the Domination, and Volonté runes. In recent games, she won the largest fraction of her games when using these runes.
We set our Katarina build suggestions by analyzing 88 923 recently ranked League of Legends games with her selected. We only recommend the highest winrate Katarina builds that were used by ranked League players enough times for us to advise them. With so many rounds in our data, we are quite confident in our recommended builds.