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.
The stats shown on this page underscore some critical Karthus versus Samira matchup statistics that can help you distinguish the differences and similarities between this pair of champs. For instance, Karthus’s KDA ratio ([kills + assists] / deaths) of NaN is greater than Samira’s KDA ratio of NaN, showing that Karthus may be more central to his team's team fighting capability than Samira. This observation is largely caused by the differences in assists.
Karthus typically has a slightly smaller longest kill spree than his matchup does. Typically, he takes a similar amount of damage to Samira. This typically indicates different amounts of tankyness, but it can also show that the one champ has less mobility and thus is not able to kite away from additional harm when engaged or poked.
Both League champs are great. Both have their pros and cons. In League's current meta, Karthus usually wins when taking on Samira, with a 51.2% win rate. Therefore, Karthus makes a good counter to Samira.
While Karthus does have a higher winrate compared to Samira, when on opposite teams, Karthus also has a greater difficulty level that makes him a more time consuming character to develop with. You still need to be cautious when picking Karthus into Samiraas his relative depth means you may not be able to reach his full potential without a lot of practice beforehand.
Furthermore, Karthus has some amount of utility and CC, a similar amount to Samira. 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 Samira matchups, Karthus is the better champ with a higher win rate, more champion depth, and a similar amount of utility to help out your teammates during late stage team fights.
Karthus is a decent counter for Samira. You will do well by focussing your tactics on maximizing your gold income and taking out objectives. If you are able to do that, you should do very well as Karthus against Samira.
If you would like to learn all of the intricacies of Karthus to counter Samira during both the lane and mid / late game phases of League of Legends, you should keep reading to pick up a few extra tricks and insights into this matchup. If you pay attention to the build and suggestions displayed here, you will increase your win rate significantly and be that much closer to League of Legends pro players.
Karthus on average picks up less CS as Samira. Champs who on average don't earn much CS typically don't have to have much CS to be valuable teammates, such as support champions. 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, typically have to have many items to be effective. In either case, try to do better than the values shown on this page to do well.
The most important items to use in your Karthus versus Samira build include Rabadon's Deathcap, Malignance, and Stormsurge. When Karthus incorporated at least these three items in his build, he did much better countering Samira than with many other commonly used counter builds. In fact, Karthus had an average win rate of 51.2% battling Samira with these items in his kit.
To have the best likelihood of defeating Samira as Karthus, you should use 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 we have analyed for Karthus vs Samira clashes, this set of runes yielded the greatest win rate. In fact, these runes provided a 51.2% win rate overall.
By default, tips, statistics, and builds on how to beat Samira as Karthus are shown for all skill levels, merged. To filter the statistics and builds to a distinct division, you can use the selection menu located earlier in the counter matchup guide.