Valkyrie can be used defensively as well, so try using it for a quick escape.
Phosphorus Bomb can be used to reveal enemy units that might be hiding in a nearby patch of brush.
Corki can continue to attack while using Gatling Gun. Maximizing Gatling Gun is key to mastering Corki.
Karthus can cast spells for a short duration after he is killed. Move away from his corpse to be safe.
Make sure you always have enough health to survive Requiem, even if you have to go back to the base more frequently to heal.
The stats shown on this page clarify some important Corki against Karthus counter stats that can help us realize the distinctions between these two champions. Corki’s KDA ratio ([kills + assists] / deaths) of NaN is more than Karthus’s KDA ratio of NaN, demonstrating that Corki may be more central to his team's team fighting effectiveness than Karthus..
Corki often has a similar longest killing spree as his matchup does. Commonly, he receives less damage than Karthus. This commonly reflects differing health capacities, yet it can also indicate that the champion with more HP has less mobility and thus is unable to kite away from additional damage when poked or engaged.
Both League champions are great champions. Both champs have their strengths, weaknesses, and counters. In the game's current meta, Corki usually fairs equally well when taking on Karthus, with a 49.2% win rate. Therefore, Corki makes an ok counter to Karthus.
While Corki does have a lower winrate than Karthus, when on opposite teams, Corki also has a lower learning curve that makes him a less time consuming champ to develop with. You still need to be cautious when picking Corki into Karthus.
Additionally, Corki has almost no amount of utility and CC, a similar amount to Karthus. This often makes her just as valuable during teamfights, especially when facing champions with a lot of burst damage.
While there is not one best champion for every situation in League of Legends, in Corki vs Karthus matchups, Karthus is the better champion with a similar win rate, less champion complexity, and a similar amount of utility to help out your allies during team fights.
Corki is a somewhat poor counter to Karthus. Make sure you focus your strategy on keeping up your CS and clearing objectives. If you are able to do that, you should be able to stand on your own as Corki against Karthus.
To learn all of the intricacies of Corki in order to counter Karthus during both the early game and mid / late game phases of League of Legends, you should continue reading to learn a few extra tips and tricks for this matchup. If you listen to the build and tips displayed here, you will grow your win rate by a lot and be that much closer to League of Legends pro players.
Corki often racks up more CS as Karthus. Champs who on average don't acquire many minion kills typically don't need much CS to be effective, such as supports. They are capable of scaling well off of their skills, stats, and first items alone. Yet, champs with large amounts of CS, such as hyper-carries, typically need many items to be effective. In either case, try to do better than the numbers shown here to do well.
The most crucial items to use in your Corki versus Karthus build consist of Muramana, Trinity Force, and Eclipse. When Corki included at least these three pieces in his build, he did a lot better vs. Karthus than with many other common counter builds. In fact, Corki had an average winrate of 49.2% when countering Karthus with these items in his kit.
To have the highest likelihood of defeating Karthus as Corki, Corki players should use the First Strike, Magical Footwear, Biscuit Delivery, Cosmic Insight, Taste of Blood, and Ultimate Hunter runes from the Inspiration and Domination rune sets. Out of all the rune builds players chose for Corki vs Karthus LoL games, this blending of runes yielded the highest win rate. In fact, these runes gave a 49.2% win rate overall.
If you need to view Corki x Karthus tips and counter builds for a an individual rank, feel free to choose one from the selection menu above. By default, the stats and strategies shown are calculated using all games finished with these champions.