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.
Try to think of Sand Soldiers as fire. Don't stand in the fire.
Azir relies on his soldiers to deal damage and can only move them so often. Try to capitalize on windows of time when his soldiers are stationary.
Azir has immense damage over a prolonged amount of time but lacks the upfront burst of other mages. Try to burst him out before he can turn a confrontation around.
The stat comparisons shown here clarify some vital Karthus versus Azir matchup statistics that can help you figure out the differences and similarities between the two. Karthus’s KDA ratio ([kills + assists] / deaths) of NaN is better than Azir’s KDA ratio of NaN, indicating that Karthus may be more central to his team's team fighting potential than Azir..
Karthus normally has a similar longest killing spree as his opponent does. Commonly, he receives more damage than Azir. This commonly reflects differing health capacities; however, it can also illustrate that the one champ has less mobility and thus is not able to flee from additional damage when engaged or poked.
Both League of Legends champs are great champions. Both champs have their strengths, weaknesses, and counters. In League's current meta, Karthus usually loses when playing against Azir, with a 46.4% win rate. As a result, Karthus makes a poor counter to Azir.
While Karthus does have a lower winrate than Azir, when facing one another, Karthus also has a lower level of difficulty that makes him a less time consuming champ to learn and master. You may get destroyed when picking Karthus into Aziras 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 utility and CC, a similar amount to Azir. This often makes her just as valuable during teamfights, especially when trying to counter champions with a ton of burst damage.
While there is not one best champion overall in League of Legends, in Karthus vs Azir matchups, Azir is the better champ with a much lower win rate, less champion complexity, and a similar amount of utility to help out your allies during team fights.
Karthus is a trash counter to Azir. Focus your tactics on keeping up your gold income and clearing objectives. If you do that, you should do very well as Karthus against Azir.
To truly master Karthus in order to counter Azir during both the laning and mid / late game phases of League of Legends, you should keep reading to learn a few extra tricks and insights into this matchup. If you listen to the build and suggestions displayed here, you will grow your win rate significantly and be that much closer to League of Legends pro players.
Karthus on average racks up less CS as Azir. Champs who typically don't earn many minion kills often don't require much CS to be effective, such as support champions. These kinds of champions are able to scale 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 numbers displayed here to do well.
The most crucial items to have in your Karthus versus Azir build include Rabadon's Deathcap, Shadowflame, and Liandry's Torment. When Karthus included at least these three items in his build, he did a lot better when facing Azir than with most other typical builds. In fact, Karthus had an average winrate of 46.4% when countering Azir with this build.
To have the best probability of crushing Azir as Karthus, you should equip the Dark Harvest, Cheap Shot, Eyeball Collection, Ultimate Hunter, Presence of Mind, and Last Stand runes from the Domination and Precision rune sets. Out of all the rune sets players used for Karthus vs Azir matchups, this combo of runes resulted in the highest win rate. Moreover, these runes averaged a 46.4% win rate overall.
By default, tips, statistics, and builds on how to beat Azir as Karthus are shown for all ranked divisions combined. If you want to scope the stats and builds to a distinct skill level, you should use the selection menu at the top of this page.