Lay Waste is very strong at farming minions and harassing enemy champions.
Ask your allies to help point out when you should use Requiem to get kills in different lanes.
Cataclysm's terrain is a frightening force to fight against, but movement abilities can go through it.
Keep out of the path between Jarvan IV and his Demacian Standard to avoid being knocked up in the air.
The stat comparisons shown here show several vital Karthus against Jarvan IV matchup stats that can help us grasp the differences between this pair of champs. Karthus’s KDA ratio ([kills + assists] / deaths) of NaN is more than Jarvan IV’s ratio of NaN, highlighting that Karthus may be more central to his team's team fighting potential than Jarvan IV..
Karthus often has a similar longest killing spree as his matchup does. Commonly, he takes less damage than Jarvan IV. This is usually reflective of different amounts of tankyness; however, it can also imply that the one champ has less agility and thus is not able to escape further harm when engaged or poked.
Both League of Legends champs are great. Both champs have their pros and cons. In the game's current meta, Karthus usually loses when taking on Jarvan IV, with a 47.6% win rate. Therefore, Karthus makes a poor counter to Jarvan IV.
While Karthus does have a lower win rate compared to Jarvan IV, when facing one another, Karthus also has a greater learning curve that makes him a more complex character to develop with. You may get destroyed when picking Karthus into Jarvan IVas his relative depth means you may not be able to reach his full potential without a lot of practice beforehand.
Additionally, Karthus also has some amount of CC and other utility, a similar amount to Jarvan IV. This makes her just as valuable during team fights, especially when facing champions with a lot of burst damage.
While there is not one best champion overall in League of Legends, in Karthus vs Jarvan IV matchups, Jarvan IV is the better champion with a lower win rate, more champion depth, and a similar amount of utility to help out your teammates during late stage team fights.
Karthus is a bad counter for Jarvan IV. Make sure you focus your tactics on keeping up your CS and taking out objectives. If you are able to do that, you should hold your own as Karthus against Jarvan IV.
To learn all of the intricacies of Karthus in order to counter Jarvan IV during both the lane and mid / late game phases of League of Legends, you should keep reading to learn a few extra lessons on this matchup. If you mind the build and suggestions shown here, you should grow your win rate significantly and be closer to League of Legends pro players.
Karthus typically picks up more CS compared to Jarvan IV. Champions who typically don't acquire many minion kills typically don't require much CS to be effective, such as sup champs. They are able to scale properly off of their skills, stats, and first items alone. Yet, champions with a lot of CS, such as hyper-carries, typically have to have several high cost items to be effective. In either case, try to do better than the values displayed here to do well.
The most crucial items to focus on in your Karthus versus Jarvan IV build include Rabadon's Deathcap, Malignance, and Shadowflame. When Karthus incorporated at least these three pieces in his build, he performed a lot better when fighting Jarvan IV than with most other typical counter builds. In fact, Karthus boasted an average win rate of 47.6% when countering Jarvan IV with these items in his kit.
To have the best likelihood of annihilating Jarvan IV as Karthus, Karthus players should use the Dark Harvest, Cheap Shot, Eyeball Collection, Ultimate Hunter, Gathering Storm, and Transcendence runes from the Domination and Sorcery rune sets. Of all the rune builds players chose for Karthus vs Jarvan IV counterpicks, this blending of runes yielded the greatest win rate. In fact, these runes gave a 47.6% win rate overall.
If you want to see Karthus versus Jarvan IV tips and matchup stats and build suggestions for a a specific division rank, feel free to select one from the selection menu shown above. At first, the stats and strategies given are computed using all matches run with these champs.