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.
Pale Cascade orbs only last a few seconds. Avoid Diana and engage her after the shield dissipates.
Diana can play very aggressively if she uses Lunar Rush without Moonlight, but you can punish her by slowing or stunning her when she has no way to get back into position.
Dodge Crescent Strike, or move to safety if you are affected by Moonlight.
The stats provided here show some important Karthus vs. Diana counter statistics that can help us explain the differences and similarities between this pair of champs. Karthus’s KDA ratio ([kills + assists] / deaths) of NaN is more than Diana’s KDA ratio of NaN, demonstrating that Karthus may be more central to his team's team fighting effectiveness than Diana..
Karthus typically has a slightly smaller longest killing spree than his opponent does. Commonly, he takes a similar amount of damage to Diana. This often reflects differing health capacities; however, it can also hint that the champ with more HP has less agility and thus is unable to escape further damage when poked or engaged.
Both League of Legends champions are great. Both champs have their strengths, weaknesses, and counters. In League's current meta, Karthus usually loses when facing off against Diana, with a 46.8% win rate. As a result, Karthus makes a bad counter to Diana.
While Karthus does have a lower win rate than Diana, when facing one another, Karthus also has a much greater learning curve that makes him a more time consuming champ to develop with. You should expect to face a difficult match when picking Karthus into Dianaas his relative depth means that you may not be able to reach his full potential without a significant amount of practice beforehand.
Furthermore, Karthus also has some amount of CC and other utility, a similar amount to Diana. This makes her just as valuable during team fights, especially when facing champions with a ton of burst damage.
While there is not one best champion overall in League of Legends, in Karthus vs Diana matchups, Diana is the better champion with a much lower win rate, more champion depth, and a similar amount of utility to help out your teammates during teamfights.
Karthus is a garbage counter to Diana. Focus your gameplay on increasing your gold and cs and clearing objectives. If you are able to do that, you should be able to stand on your own as Karthus against Diana.
If you would like to learn all of the intricacies of Karthus to counter Diana during both the lane and mid / late game phases of League of Legends, you should keep reading to pick up a few extra lessons on this matchup. If you pay attention to the build and suggestions presented here, you will grow your win rate significantly and be that much closer to League of Legends pro players.
Karthus usually gets a similar amount of CS relative to Diana. Champions who typically don't acquire many minion kills often don't require much CS to be valuable teammates, such as supports. These kinds of champions are capable of scaling properly off of their abilities and first items alone. Yet, champions with large amounts of CS, such as hyper-carries, usually require a lot of items to be effective. In either case, try to exceed the values reported here to do well.
The most important items to use in your Karthus versus Diana build include Void Staff, Shadowflame, and Liandry's Torment. When Karthus incorporated at least these three pieces in his build, he did much better when fighting Diana than with many other commonly used counter builds. In fact, Karthus had an average winrate of 46.8% when playing against Diana with this counter build.
To have the greatest likelihood of defeating Diana as Karthus, Karthus players should equip the First Strike, Magical Footwear, Future's Market, Cosmic Insight, Eyeball Collection, and Ultimate Hunter runes from the Inspiration and Domination rune sets. Of all the rune builds that we analyzed for Karthus vs Diana counterpicks, this set of runes yielded the greatest win rate. In fact, these runes averaged a 46.8% winrate overall.
If you need to view Karthus x Diana tips and builds for a an individual division, feel free to select one from the selection menu provided above. At first, the stats and build suggestions displayed are computed using every game finished with these champions.