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.
Interrupting the charge up on Absolute Zero will lower the amount of damage your team takes.
Using Summoner Flash is a surefire way to escape Absolute Zero.
Biggest Snowball Ever moves very fast but cannot turn as quickly, so don't try to escape it by running away in a straight line. Instead, make sudden, sharp turns.
The stats provided here feature some important Karthus vs. Nunu & Willump matchup stats that may help you distinguish the distinctions between the two. For instance, Karthus’s KDA ratio ([kills + assists] / deaths) of NaN is more than Nunu & Willump’s KDA ratio of NaN, indicating that Karthus may be more central to his team's team fighting capability than Nunu & Willump..
Karthus often has a slightly larger longest killing spree than his counter does. Commonly, he takes less damage than Nunu & Willump. This is usually reflective of differing health capacities, but it can also imply that the one champion has less mobility and thus is unable to flee from further damage when engaged or poked.
Both LoL champs are great. Both champs have their strengths, weaknesses, and counters. In the game's current meta, Karthus usually fairs equally well when taking on Nunu & Willump, with a 49.3% win rate. Therefore, Karthus makes an ok counter to Nunu & Willump.
While Karthus does have a lower winrate than Nunu & Willump, when facing one another, Karthus also has a much greater learning curve that makes him a more complex champion to learn and master. You still need to be cautious when picking Karthus into Nunu & Willumpas his relative depth means that you may not be able to reach his full potential without a significant amount of practice beforehand.
Furthermore, Karthus has some amount of CC and other utility, a similar amount to Nunu & Willump. This makes her just as valuable during team fights, especially when facing champions with a ton of burst damage.
While there is not a single best champion for every situation in League of Legends, in Karthus vs Nunu & Willump matchups, Nunu & Willump is the better champion with a similar win rate, more champion depth, and a similar amount of utility to help out your allies during team fights.
Karthus is a somewhat poor counter to Nunu & Willump. Make sure you focus your gameplay on increasing your gold and cs and taking out objectives. If you can do that, you should be able to stand on your own as Karthus against Nunu & Willump.
To truly master Karthus to counter Nunu & Willump during both the early game and mid / late game phases of League of Legends, you should continue reading to gather a few extra tips and tricks for this matchup. If you listen to the build and stats presented above, you should grow your win rate by a lot and be closer to League of Legends pro players.
Karthus often accumulates more CS relative to Nunu & Willump. Champs who typically don't get much CS typically don't have to have much CS to be effective, such as sup champs. They are capable of scaling well 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 situation, try to exceed the values displayed on this page to do well.
The ideal items to have in your Karthus versus Nunu & Willump build consist of Malignance, Stormsurge, and Liandry's Torment. When Karthus combined at least these three pieces in his build, he performed much better countering Nunu & Willump than with most other typical item sets. In fact, Karthus had an average win rate of 49.3% battling Nunu & Willump with these items in his kit.
To have the highest likelihood of coming out on top against Nunu & Willump as Karthus, you should use the First Strike, Magical Footwear, Future's Market, Cosmic Insight, Eyeball Collection, and Ultimate Hunter runes from the Inspiration and Domination rune sets. Out of all the rune combinations players used for Karthus vs Nunu & Willump clashes, this set of runes resulted in the best win rate. Notably, these runes provided a 49.3% win rate overall.
By default, tips, stats, and builds on how to beat Nunu & Willump as Karthus are presented for all skill levels, merged. If you would like to narrow the statistics and builds to a particular skill level, you can use the selection menu located earlier on the page.