A fully charged Vault Breaker will deal double damage. It's great for catching and finishing off fleeing enemies.
Relentless Force does full damage to anyone caught in the shockwave. Use it on minions in lane to hit enemies hiding behind them.
Cease and Desist is a powerful initiation tool, just remember not to get too far ahead of the rest of your team.
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 stat comparisons provided here underscore some vital Vi against Karthus counter stats that may help you figure out the differences and similarities between the pair. For instance, Vi’s KDA ratio ([kills + assists] / deaths) of NaN is greater than Karthus’s KDA ratio of NaN, highlighting that Vi may be more central to her team's team fighting effectiveness than Karthus..
Vi normally has a similar longest killing spree as her foe does. On average, she takes a similar amount of damage to Karthus. This typically indicates different amounts of tankyness; however, it can also show that the one champ has less agility and thus is not able to escape further damage when poked or engaged.
Both League champions are great. Both champs have their pros and cons. In the game's current meta, Vi usually wins when taking on Karthus, with a 55.4% win rate. Thus, Vi makes a fantastic counter to Karthus.
While Vi does have a much higher win rate compared to Karthus, when facing one another, Vi also has a lower level of difficulty that makes her a less complex champ to learn. You should be be fine when picking Vi into Karthus.
Furthermore, Vi also has only a small amount of utility and CC, a similar amount to Karthus. This 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 overall in League of Legends, in Vi vs Karthus matchups, Vi is the better champ with a noticably higher win rate, less champion complexity, and a similar amount of utility to help out your allies during late stage team fights.
Vi is a great counter to Karthus. Focus your gameplay on increasing your CS and clearing objectives. If you can do that, you should do very well as Vi against Karthus.
To truly master Vi to counter Karthus during both the lane 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 pay attention to the build and stats shown above, you will grow your win rate by a lot and be that much closer to League of Legends pro players.
Vi often racks up less CS compared to Karthus. Champs who typically don't earn many minion kills typically don't have to have much CS to be effective, such as supports. They are able to scale properly off of their skills, stats, and first items alone. Yet, champs with large amounts of CS, such as hyper-carries, often have to have a lot of items to be effective. In either situation, try to exceed the values reported here to do well.
The most important items to have in your Vi versus Karthus build include Black Cleaver, Death's Dance, and Sundered Sky. When Vi combined at least these three pieces in her build, she did significantly better against Karthus than with many other common builds. In fact, Vi boasted an average winrate of 55.4% when countering Karthus with these items in her kit.
To have the best likelihood of coming out on top against Karthus as Vi, Vi players should equip the Hail of Blades, Sudden Impact, Eyeball Collection, Relentless Hunter, Triumph, and Legend: Alacrity runes from the Domination and Precision rune sets. Of all the rune sets that we analyzed for Vi vs Karthus clashes, this order of runes yielded the greatest win rate. Notably, these runes averaged a 55.4% win rate overall.
If you need to view Vi vs Karthus tips and matchup stats and build suggestions for a a particular rank, feel free to select one from the selection menu provided above. At first, the stats and strategies displayed are calculated using all games with data with these champions.