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.
You can crush Bard's healing shrines just by walking over them. Don't let his allies take them without a fight.
Bard's opponents can also travel through his Magical Journey doorways. You can follow him, if you think it's safe.
Bard's ultimate, Tempered Fate, affects allies, enemies, monsters, and turrets alike. Sometimes it can be to your advantage to jump into it!
The stats shown on this page show some vital Karthus against Bard counter stats that may help you explain the differences between the pair. For instance, Karthus’s KDA ratio ([kills + assists] / deaths) of NaN is better than Bard’s KDA ratio of NaN, demonstrating that Karthus may be more central to his team's team fighting potential than Bard. This observation is largely a result of the differences in killsdeaths.
Karthus typically has a much larger longest killing spree than his opponent does. Commonly, he takes more damage than Bard. This commonly reflects differing health capacities, yet it can also indicate that the one champ has less mobility and thus is not able to escape further harm when engaged or poked.
Both League champs are great champions. Both champs have their strengths, weaknesses, and counters. In League's current meta, Karthus usually loses when taking on Bard, with a 44.8% win rate. As a result, Karthus makes a bad counter to Bard.
While Karthus does have a much lower win rate than Bard, when they face off with one another, Karthus also has a lower learning curve that makes him a less difficult champ to develop with. You may get destroyed when picking Karthus into Bardas 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 Bard. 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 one best champion in League of Legends, in Karthus vs Bard matchups, Bard is the better champion with a much lower win rate, less champion complexity, and a similar amount of utility to help out your allies during teamfights.
Karthus is a terribly counter for Bard. You will do well by focussing your tactics on maximizing your gold income and taking out objectives. If you are able to do that, you should do very well as Karthus against Bard.
To truly master Karthus in order to counter Bard during both the lane and mid / late game phases of League of Legends, you should continue reading to pick up a few extra tips and tricks for this matchup. If you mind the build and tips displayed above, you should increase your win rate significantly and be that much closer to League of Legends pro players.
Karthus typically gets much more CS compared to Bard. Champions who on average don't get many minion kills usualy don't have to have much CS to be effective, such as supports. They are capable of scaling properly off of their abilities and first items alone. Yet, champions with a lot of CS, such as hyper-carries, usually need several high cost items to be effective. In either situation, try to do better than the values reported on this page to do well.
The ideal items to prioritize in your Karthus versus Bard build include Liandry's Anguish, Rabadon's Deathcap, and Shadowflame. When Karthus used at least these three items in his build, he did significantly better versus Bard than with most other typical builds. In fact, Karthus boasted an average win rate of 44.8% battling Bard with these items in his kit.
To have the highest probability of crushing Bard as Karthus, you 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 used for Karthus vs Bard fights, this combination of runes yielded the greatest win rate. In fact, these runes averaged a 44.8% winrate overall.
If you want to view Karthus vs Bard tips and builds for a a distinct rank, feel free to select one from the selection menu displayed above. By default, the stats and build suggestions given are calculated using every game completed with these champions.