Use Demacian Standard as a scouting tool when worried about incoming enemies.
You can use the Dragon Strike / Demacian Standard combo to get out of your own Cataclysm arenas.
Split your basic attacks on different champions at the beginning of fights to maximize damage.
The Vex Jarvan IV synergy stats shown here demonstrate the areas of their gameplay that do better (or worse) when paired with Jarvan IV, compared to their overall stats. Significant differences are areas of focus that highlight how their gameplay changes when paired with this other champion.
Overall, Vex sees a large worsening in their KDA (ratio of kills and assists to deaths) when paired with Jarvan IV. His KDA decreased from NaN to NaN. This fall shows that Jarvan IV helps Vex perform worse in ranked LoL rounds. Yet, the small difference proves that this performance change is only marginal.
When Vex is paired with Jarvan IV, they gets a small increase in their complete damage dealt. This change may indicate that Jarvan IV helps provide protection for them to deal more damage or that his allyship also helps extend the match's duration. Similarly, when Vex is played together with Jarvan IV on the same side, he usually scores many fewer killing sprees than when they plays on his own. This is contrasting evidence that they is worse when playing alongside Jarvan IV.
Additionally, when Vex plays with Jarvan IV on the same team, they on average takes a little less damage than when they fights alone. Getting dealt not as much damage may mean that Jarvan IV does a decent job of protecting Vex in teamfights.
There is no perfect synergy for Vex that will 100% of the time be their top synergy. However, overall, Jarvan IV is a terrible companion for Vex. By being on the same team as Vex, he lowers their win rate by -4.5% to 44.3%. This demonstrates that there is an easy to overcome and exploit bond between Vex and Jarvan IV that results in them performing not as well together than alone.
Jarvan IV has a much greater difficulty compared to Vex. That means you should be cautious when lining up Jarvan IV allies to fight alongside, as they will need a much higher level of skill to be able to play well with you.
Fighting together, Vex players should expect to see an overall large increase in your team’s capability to soak up damage. Together, these two might be able to provide enough cover for their team's carries.
Although, by pairing Vex and Jarvan IV together, you will not be giving your other teammates enough magic damage. We recommend you bring other champions on your team that fills this relative hole in their abilities.
Regardless of your Jarvan IV ally's ability, you need to focus on maximizing your income, warding to avoid ambushes, and clearing objectives. If you do this, you will do well anyway.
To truly master Vex in order to synergize with Jarvan IV during both the early game and mid / late game phases of League of Legends games, you should continue reading to learn additional lessons on this champion pairing. If you listen to the build and stats displayed above, you should grow your win rate significantly.
The ideal items to use in your Vex and Jarvan IV synergy build include Zhonya's Hourglass, Stormsurge, and Luden's Companion. When Vex bought at least these three items in their build, they performed significantly better when paired up with Jarvan IV than with many other commonly used builds. In fact, Vex had an average win rate of 44.3% when synergizing their build and playstyle to Jarvan IV with this build.
To have the highest probability of coming out on top against your oponents, Vex players should equip the Electrocute, Taste of Blood, Eyeball Collection, Ultimate Hunter, Manaflow Band, and Transcendence runes from the Domination and Sorcery rune sets. Out of all the runes players chose for this team composition, this blending of runes resulted in the best win rate. Notably, these runes gave a 44.3% win rate overall.
If you need to see Vex and Jarvan IV cooperations tips and stats for a a specific division, feel free to choose one from the selection menu shown above. By default, the stats and strategies given are computed using every game with data with these champs.