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.
Malzahar is especially dangerous when he has built up his Void Swarm.
When Malzahar hits a spell on enemies affected by Malefic Visions, the Visions are refreshed.
Avoid minion waves that have been affected by Malefic Visions. You never know when they may die and pass the Visions onto you.
The stats shown on this page show some influential Karthus against Malzahar counter stats that can help you realize the differences between the two. Karthus’s KDA ratio ([kills + assists] / deaths) of NaN is more than Malzahar’s KDA ratio of NaN, highlighting that Karthus may be more central to his team's team fighting capability than Malzahar..
Karthus normally has a slightly larger longest killing spree than his matchup does. Commonly, he takes more damage than Malzahar. This often reflects different amounts of tankyness, yet it can also illustrate that the champion with higher HP has less mobility and thus is unable to flee from additional harm when engaged or poked.
Both League of Legends champions are great. Both have their strengths, weaknesses, and counters. In the game's current meta, Karthus usually loses when taking on Malzahar, with a 47.8% win rate. Thus, Karthus makes a bad counter for Malzahar.
While Karthus does have a lower winrate compared to Malzahar, when on opposite teams, Karthus also has a greater difficulty level that makes him a more time consuming champion to learn and master. You should be very concerned when picking Karthus into Malzaharas his relative depth means you may not be able to unleash his full potential without a lot of practice beforehand.
Furthermore, Karthus also has some amount of utility and CC, a similar amount to Malzahar. This makes her just as valuable during teamfights, especially when fighting champions with a lot of burst damage.
While there isn't one best champion for every situation in League of Legends, in Karthus vs Malzahar matchups, Malzahar is the better champ with a lower win rate, more champion depth, and a similar amount of utility to help out your team members during late stage team fights.
Karthus is a trash counter to Malzahar. You will do well by focussing your tactics on keeping up your gold income and taking out objectives. If you are able to do that, you should do very well as Karthus against Malzahar.
If you would like to learn all of the intricacies of Karthus in order to counter Malzahar during both the laning 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 stats shown here, you will increase your win rate significantly and be that much closer to League of Legends pro players.
Karthus often picks up less CS as Malzahar. Champions who typically don't acquire much CS typically don't have to have much CS to be effective, such as support champions. They are capable of scaling well off of their abilities and first items alone. Yet, champions with a lot of CS, such as hyper-carries, usually require several high cost items to be effective. In either situation, try to surpass the numbers reported here to do well.
The best items to use in your Karthus versus Malzahar build include Rabadon's Deathcap, Shadowflame, and Stormsurge. When Karthus incorporated at least these three items in his build, he did a lot better countering Malzahar than with most other typical counter builds. In fact, Karthus had an average winrate of 47.8% battling Malzahar with this counter build.
To have the greatest chance of defeating Malzahar as Karthus, Karthus players should equip 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 Malzahar counter picks, this mixture of runes yielded the highest win rate. In fact, these runes gave a 47.8% win rate overall.
If you want to see Karthus x Malzahar tips and matchup stats and build suggestions for a a distinct division, feel free to choose one from the selection menu shown above. If viewing for the first time, the statistics and strategies given are calculated using all matches with data with these champs.