Hello everyone. As a Jarvan IV main, I am really excited about what's going on in Demacia recently. Since this would be a perfect time time to give Jarvan IV the same treatment that Ezreal have last year, I would like to contribute my mini-rework idea which is a minor change to his kit, just like Ezreal's kit changes..
[W] Golden Aegis (New)
ACTIVE: Jarvan IV slows all nearby enemies for 2 seconds.
15 / 20 / 25 / 30 / 35% => 20 / 25 / 30 / 35 / 40%
Jarvan IV also shields himself for 4 seconds, this shield increased Jarvan IV armor and magic resist by 2% of Jarvan IV's maximum health, increased to 4% while Jarvan IV inside Cataclysm .
[R] Cataclysm COOLDOWN: 120 / 105 / 90 => 160 / 120 / 80
200 / 325 / 450 (+ 150% bonus AD) => 160 / 320 / 480 (+ 160% bonus AD)
Upon impact, he creates a circle of impassable terrain for 3.5 => 4 seconds that grants sight around it.
REMOVE : Jarvan IV can reactivate Cataclysm to destroy the circle.
I think most of Jarvan IV's kit are awesome and don't need any major changes. But as a Jarvan IV main I think his W could use some new mechanic. I know that this will make him more tanky and probably overpowered, so I deliberately make his R harder to use and nerf it in the mid game with some return in the late game. The idea was to make him more tanky while he inside his R, which will make his role as a tank more viable. Hopefully with suitable adjustments this idea will be considered.