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.
Gnar's ultimate stuns if he hits you into a wall. Be careful when fighting him near one.
Gnar's animations and resource bar change as he gets closer to transforming.
Gnar can't gain Rage for 15 seconds after he turns from big to little. Use this chance to engage on his team.
The stat comparisons provided here highlight some influential Karthus versus Gnar counter stats that can help us explain the differences and similarities between the two. As an example, Karthus’s KDA ratio ([kills + assists] / deaths) of NaN is more than Gnar’s KDA ratio of NaN, demonstrating that Karthus may be more central to his team's team fighting effectiveness than Gnar..
Karthus typically has a slightly larger longest killing spree than his counter does. Typically, he takes a similar amount of damage to Gnar. This often reflects different amounts of tankyness, but it can also hint that the champion with more HP has less agility and thus is not able to escape additional damage when engaged or poked.
Both LoL champions are great champions. Both champs have their pros and cons. In League's current meta, Karthus usually loses when taking on Gnar, with a 46.3% win rate. Thus, Karthus makes a bad counter for Gnar.
While Karthus does have a lower win rate than Gnar, when on opposite teams, Karthus also has a lower difficulty level that makes him a less difficult character to pick up and master. You should be very concerned when picking Karthus into Gnaras his relative depth means that you may not be able to reach his full potential without a significant amount of practice beforehand.
Additionally, Karthus also has some amount of utility and CC, a similar amount to Gnar. 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 a single best champion in League of Legends, in Karthus vs Gnar matchups, Gnar is the better champ with a much lower win rate, less champion complexity, and a similar amount of utility to help out your teammates during late stage team fights.
Karthus is a terribly counter for Gnar. Focus your tactics on increasing your gold income and taking out objectives. If you can do that, you should hold your own as Karthus against Gnar.
To learn all of the intricacies of Karthus in order to counter Gnar during both the early game and mid / late game phases of League of Legends, you should keep reading to gather a few extra lessons on this matchup. If you mind the build and stats presented above, you will increase your win rate by a lot and be that much closer to League of Legends pro players.
Karthus usually picks up less CS relative to Gnar. Champs who on average don't acquire much CS often don't have to have much CS to be valuable teammates, such as support champions. They 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 require a lot of items to be effective. In either situation, try to surpass the numbers shown on this page to do well.
The most crucial items to have in your Karthus versus Gnar build consist of Malignance, Stormsurge, and Liandry's Torment. When Karthus incorporated at least these three items in his build, he performed significantly better when fighting Gnar than with many other common item sets. In fact, Karthus had an average win rate of 46.3% battling Gnar with this counter build.
To have the highest likelihood of defeating Gnar as Karthus, Karthus players should take the Dark Harvest, Cheap Shot, Eyeball Collection, Ultimate Hunter, Presence of Mind, and Last Stand runes from the Domination and Precision rune sets. Of all the rune sets players chose for Karthus vs Gnar LoL games, this sequence of runes yielded the greatest win rate. Moreover, these runes provided a 46.3% winrate overall.
By default, tips, statistics, and builds on how to beat Gnar as Karthus are presented for all ranked divisions. To narrow the statistics and builds to a particular skill level, you can use the selection menu earlier in the counter matchup guide.