For increased range and damage, try casting Shock Blast through the Acceleration Gate.
If you find yourself taking lots of damage, try using Jayce's Hammer Stance, as it grants you additional defenses.
Be sure to switch stances often. It will enhance your attacks and grant you quick bursts of speed.
Make sure to buy items that will evolve at least 1 or 2 of your spells.
Work with your teammates to set up your Ultimate and optimize damage with your passive.
Try to catch enemy carries alone to burst them with Icathian Rain.
The Jayce Kai'Sa synergy stats shown here demonstrate the areas of his gameplay that do better (or worse) when paired with Kai'Sa, compared to his overall stats. Significant differences are areas of focus that highlight how his gameplay changes when paired with this other champion.
Overall, Jayce sees a very large drop in his KDA (ratio of kills and assists to deaths) when paired with Kai'Sa. His KDA worsened from NaN to NaN. This drop shows that Kai'Sa helps Jayce perform not as well in competitive League matches. Yet, the small difference indicates that this performance change is not very impactful.
When Jayce is an ally to Kai'Sa, he sees a little drop in his total damage dealt. This change may indicate that Kai'Sa does not provide protection for him to dish out more damage or that her allyship also helps extend the game's duration. Similarly, when Jayce is played with Kai'Sa on the same side, he usually scores many fewer killing sprees than when he plays alone. This is contrasting evidence that he is worse when playing synergisticly with Kai'Sa.
Moreover, when Jayce plays with Kai'Sa on the same team, he typically takes a little less damage than when he fights alone. Getting dealt not as much damage could indicate that Kai'Sa does a decent job of covering Jayce in teamfights.
There is no perfect companion for Jayce that will 100% of the time be his top ally. Yet, overall, Kai'Sa is a very bad companion for Jayce. By being on the same team as Jayce, she lowers their win rate by -4.0% to 43.8%. This proves that there is an easy to overcome and exploit bond between Jayce and Kai'Sa that allows them to perform worse together than alone.
Kai'Sa has a lower difficulty than Jayce. That means you don't need to be very careful when finding Kai'Sa teammates to play with, as they will require a relatively low level of skill to work well with you.
Working alongside, Jayce players should see an overall large increase in your team’s capability to deal physical damage. Combined, these champions should be able to take down targets with auto-attacks and other AD damage abilities.
Conversely, by pairing Jayce and Kai'Sa together, you probably will not be granting your other allies a great deal of support. Plan to have other champions on your team that helps cover this gap in this pairing's capabilities.
Regardless of the skill of your Kai'Sa ally, you should focus on increasing your gold income, staying alive by avoiding foolish fights, and clearing objectives. If you heed this simple advice, you will do well, regardless.
If you would like to truly master Jayce in order to pair well with Kai'Sa during both the laning and mid / late game phases of League games, you should continue reading to learn a few extra lessons on this champion pairing. If you pay attention to the build and tips presented here, you will grow your win rate by a lot.
The ideal items to have in your Jayce and Kai'Sa synergy build include Youmuu's Ghostblade, Maw of Malmortius, and Serylda's Grudge. When Jayce incorporated at least these three finished items in his build, he performed a lot better as an ally of Kai'Sa than with most other common item sets. In fact, Jayce boasted an average win rate of 43.8% when playing alongside Kai'Sa with this build.
To have the greatest probability of annihilating your oponents, you should equip the First Strike, Magical Footwear, Biscuit Delivery, Cosmic Insight, Manaflow Band, and Transcendence runes from the Inspiration and Sorcery rune sets. Of all the runes players used for this team composition, this set of runes resulted in the greatest win rate. Notably, these runes gave a 43.8% win rate overall.
By default, tips, statistics, and builds on how to team up Kai'Sa with Jayce are presented for every ranked division. If you would like to narrow the stats and builds to a particular player tier, you should use the selection menu above.