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.
Xin Zhao relies heavily on his Three Talon Strikes for damage and cooldown resets, so preventing him from finishing his combo will have a dramatic effect.
Xin Zhao is a powerful initiator with both his charge and ultimate dealing damage to all units around him. Try having your team stay spread out until he's used his ultimate.
The stats provided here emphasize some significant Karthus against Xin Zhao matchup statistics that may help you distinguish the differences between these two champs. Karthus’s KDA ratio ([kills + assists] / deaths) of NaN is greater than Xin Zhao’s ratio of NaN, demonstrating that Karthus may be more central to his team's team fighting capacity than Xin Zhao..
Karthus typically has a similar longest kill spree as his enemy does. On average, he receives less damage than Xin Zhao. This commonly reflects different amounts of tankyness; however, it can also imply that the champ with increased HP has less agility and thus is unable to escape further harm when poked or engaged.
Both LoL champions are great. Both have their pros and cons. In the game's current meta, Karthus usually loses when facing off against Xin Zhao, with a 47.3% win rate. Thus, Karthus makes a bad counter for Xin Zhao.
While Karthus does have a lower winrate compared to Xin Zhao, when they face off with one another, Karthus also has a much greater difficulty level that makes him a more challenging character to learn and master. You should expect to face a difficult match when picking Karthus into Xin Zhaoas his relative depth means you may not be able to reach his full potential without a lot of practice beforehand.
Furthermore, Karthus also has some amount of CC and other utility, a similar amount to Xin Zhao. This makes her just as valuable during team fights, 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 Karthus vs Xin Zhao matchups, Xin Zhao is the better champion with a lower win rate, more champion depth, and a similar amount of utility to help out your allies during teamfights.
Karthus is a terribly counter for Xin Zhao. You will do well by focussing your gameplay on keeping up your CS and taking out objectives. If you can do that, you should hold your own as Karthus against Xin Zhao.
To learn all of the intricacies of Karthus to counter Xin Zhao during both the laning and mid / late game phases of League of Legends, you should continue reading to pick up a few extra tips and tricks for this matchup. If you listen to the build and tips displayed above, you should grow your win rate significantly and be closer to League of Legends pro players.
Karthus most often picks up more CS as Xin Zhao. Champs who on average don't earn many minion kills typically don't require much CS to be valuable teammates, such as support champions. These kinds of champions are able to scale well off of their skills, stats, and first items alone. Yet, champions with large amounts of CS, such as hyper-carries, often need a lot of items to be effective. In either case, try to surpass the numbers displayed on this page to do well.
The best items to have in your Karthus versus Xin Zhao build include Rabadon's Deathcap, Malignance, and Stormsurge. When Karthus bought at least these three items in his build, he did significantly better countering Xin Zhao than with most other common item sets. In fact, Karthus boasted an average win rate of 47.3% when playing against Xin Zhao with this counter build.
To have the greatest probability of annihilating Xin Zhao as Karthus, Karthus players should take the First Strike, Magical Footwear, Future's Market, Cosmic Insight, Eyeball Collection, and Ultimate Hunter runes from the Inspiration and Domination rune sets. Out of all the rune sets players chose for Karthus vs Xin Zhao face-offs, this mix of runes yielded the best win rate. Notably, these runes provided a 47.3% win rate overall.
If you would like to see Karthus vs Xin Zhao tips and counter builds for a an individual skill level, please select one from the selection menu provided above. By default, the statistics and strategies displayed are calculated using every round completed with these champions.