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.
Killing Tentacles whenever possible will make it much easier to win a fight against Illaoi.
When your spirit gets pulled out, fight back if you can. Dealing damage to Illaoi reduces the spirit's duration.
Avoid grouping up for Leap of Faith to reduce the number of Tentacles available to Illaoi.
The stats provided here emphasize some important Jarvan IV vs. Illaoi matchup stats that may help us appreciate the differences between the two. As an example, Jarvan IV’s KDA ratio ([kills + assists] / deaths) of NaN is better than Illaoi’s KDA ratio of NaN, showing that Jarvan IV may be more central to his team's team fighting capacity than Illaoi. This observation is largely a result of the differences in assists.
Jarvan IV normally has a similar longest killing spree as his opponent does. Commonly, he takes less damage than Illaoi. This often reflects differing health capacities, yet it can also show that the champ with more health has less mobility and thus is not able to flee from further damage when engaged or poked.
Both League of Legends champs are great. Both have their strengths, weaknesses, and counters. In the game's current meta, Jarvan IV usually loses when playing against Illaoi, with a 48.4% win rate. As a result, Jarvan IV makes a poor counter for Illaoi.
While Jarvan IV does have a lower winrate compared to Illaoi, when they face off with one another, Jarvan IV also has a greater difficulty level that makes him a more complex champion to pick up and master. You still need to be cautious when picking Jarvan IV into Illaoi.
Moreover, Jarvan IV also has some amount of utility and CC, a similar amount to Illaoi. This makes her just as valuable during teamfights, especially when trying to counter champions with a lot of burst damage.
While there is not one best champion for every situation in League of Legends, in Jarvan IV vs Illaoi matchups, Illaoi is the better champ with a lower win rate, more champion depth, and a similar amount of utility to help out your allies during team fights.
Jarvan IV is a somewhat poor counter for Illaoi. You will do well by focussing your actions on maximizing your CS and destroying objectives. If you can do that, you should be able to stand on your own as Jarvan IV against Illaoi.
If you would like to learn all of the intricacies of Jarvan IV in order to counter Illaoi during both the lane and mid / late game phases of League of Legends, you should keep reading to pick up a few extra tips and tricks for this matchup. If you listen to the build and suggestions presented here, you will increase your win rate by a lot and be closer to League of Legends pro players.
Jarvan IV typically picks up a lot less CS as Illaoi. Champs who on average don't earn many minion kills usualy don't require much CS to be effective, such as sup champs. These kinds of champions are able to scale well off of their abilities and first items alone. Yet, champions with a lot of CS, such as hyper-carries, often have to have a lot of items to be effective. In either case, try to do better than the values reported on this page to do well.
The most crucial items to prioritize in your Jarvan IV versus Illaoi build include Sterak's Gage, Spear of Shojin, and Sundered Sky. When Jarvan IV included at least these three items in his build, he did significantly better vs. Illaoi than with many other typical item sets. In fact, Jarvan IV boasted an average win rate of 48.4% battling Illaoi with this counter build.
To have the greatest chance of vanquishing Illaoi as Jarvan IV, you should use the Conqueror, Triumph, Legend: Alacrity, Coup de Grace, Cosmic Insight, and Magical Footwear runes from the Precision and Inspiration rune sets. Of all the rune sets players chose for Jarvan IV vs Illaoi clashes, this combo of runes resulted in the best win rate. Notably, these runes gave a 48.4% winrate overall.
If you want to get Jarvan IV vs Illaoi tips and matchup stats and build suggestions for a a specific rank, feel free to select one from the selection menu provided above. By default, the stats and guides shown are computed using every round completed with both champions.