Ask your allies to help point out when you should use Requiem to get kills in different lanes.
Lay Waste is very strong at farming minions and harassing enemy champions.
Aqua Prison is a very powerful ability with a long cooldown, take advantage of the situation if Nami misses this ability.
Tidal Wave has a very long range but travels slowly, be aware of when it is coming your way as you can move out of its path.
Try to avoid fighting an opponent affected by Tidecaller's Blessing, it lasts a short duration so waiting it out can help you greatly.
The stat comparisons provided here show some valuable Karthus against Nami counter statistics that may help us appreciate the differences between these two champions. As an example, Karthus’s KDA ratio ([kills + assists] / deaths) of NaN is greater than Nami’s ratio of NaN, showing that Karthus may be more central to his team's team fighting potential than Nami. This observation is largely fueled by the differences in killsdeaths.
Karthus typically has a much larger longest kill spree than his opponent does. Commonly, he takes more damage than Nami. This often reflects differing health capacities, yet it can also show that the champ with higher health has less agility and thus is not able to escape additional harm when engaged or poked.
Both LoL champions are great. Both have their strengths, weaknesses, and counters. In the game's current meta, Karthus usually loses when facing off against Nami, with a 47.7% win rate. Therefore, Karthus makes a bad counter for Nami.
While Karthus does have a lower winrate than Nami, when facing one another, Karthus also has a greater learning curve that makes him a more challenging champion to develop with. You should be very concerned when picking Karthus into Namias his relative depth means that you may not be able to unleash his full potential without a significant amount of practice beforehand.
Additionally, Karthus also has some amount of CC and other utility, a similar amount to Nami. This often makes her just as valuable during teamfights, especially when fighting champions with a ton of burst damage.
While there isn't a single best champion for every situation in League of Legends, in Karthus vs Nami matchups, Nami is the better champ 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 to Nami. Make sure you focus your play on increasing your gold and cs and taking out objectives. If you are able to do that, you should hold your own as Karthus against Nami.
To learn all of the intricacies of Karthus in order to counter Nami during both the early game and mid / late game phases of League of Legends, you should keep reading to gather a few extra tricks and insights into this matchup. If you mind the build and stats presented above, you should grow your win rate by a lot and be that much closer to League of Legends pro players.
Karthus on average racks up much more CS compared to Nami. Champs who typically don't acquire much CS often don't need much CS to be valuable teammates, such as support champions. These kinds of champions are able to scale well off of their abilities 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 do better than the numbers reported on this page to do well.
The most important items to have in your Karthus versus Nami build include Liandry's Anguish, Rabadon's Deathcap, and Zhonya's Hourglass. When Karthus used at least these three items in his build, he performed a lot better vs. Nami than with many other commonly used counter builds. In fact, Karthus boasted an average win rate of 47.7% when countering Nami with this build.
To have the greatest likelihood of defeating Nami as Karthus, Karthus players should equip the Dark Harvest, Cheap Shot, Eyeball Collection, Treasure Hunter, Presence of Mind, and Last Stand runes from the Domination and Precision rune sets. Out of all the rune sets players picked for Karthus vs Nami clashes, this composite of runes resulted in the greatest win rate. Notably, these runes provided a 47.7% winrate overall.
If you would like to view Karthus vs Nami tips and counter builds for a an individual player tier, feel free to select one from the selection menu above. By default, the stats and strategies shown are calculated using every match with data with these champs.