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.
Ezreal is a very fragile champion so take the fight to him.
Ezreal is completely skill shot based, so make sure to keep minions in between you.
Mystic Shot applies on-hit effects including the Crest of Cinders.
The stat comparisons shown on this page clarify some vital Karthus vs. Ezreal matchup stats that may help you figure out the distinctions between this pair of champs. Karthus’s KDA ratio ([kills + assists] / deaths) of NaN is greater than Ezreal’s KDA ratio of NaN, indicating that Karthus may be more central to his team's team fighting effectiveness than Ezreal..
Karthus often has a similar longest kill spree as his opponent does. Typically, he takes more damage than Ezreal. This is usually reflective of different amounts of tankyness, but it can also indicate that the one champ has less agility and thus is unable to kite away from further damage when engaged or poked.
Both League champs are great champions. Both champs have their strengths, weaknesses, and counters. In the game's current meta, Karthus usually fairs equally well when taking on Ezreal, with a 50.5% win rate. As a result, Karthus makes an ok counter for Ezreal.
While Karthus does have a higher winrate compared to Ezreal, when on opposite teams, Karthus also has a greater difficulty level that makes him a more complex character to learn. You still need to be cautious when picking Karthus into Ezrealas his relative depth means you may not be able to unleash his full potential without a lot of practice beforehand.
Furthermore, Karthus has some amount of CC and other utility, a similar amount to Ezreal. This often makes her just as valuable during team fights, especially when fighting champions with a lot of burst damage.
While there isn't one best champion for every situation in League of Legends, in Karthus vs Ezreal matchups, Karthus is the better champ with a similar win rate, similar champion depth, and a similar amount of utility to help out your allies during teamfights.
Karthus is a decent counter for Ezreal. Make sure you focus your strategy on maximizing your gold income and destroying objectives. If you do that, you should be able to stand on your own as Karthus against Ezreal.
To truly master Karthus in order to counter Ezreal 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 listen to the build and tips presented above, you will increase your win rate significantly and be that much closer to League of Legends pro players.
Karthus on average racks up less CS as Ezreal. Champions who on average don't take much CS typically don't have to have much CS to be valuable teammates, such as sup champs. These kinds of champions 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, usually have to have a lot of items to be effective. In either situation, try to exceed the numbers shown on this page to do well.
The most crucial items to use in your Karthus versus Ezreal build include Rabadon's Deathcap, Shadowflame, and Liandry's Torment. When Karthus included at least these three items in his build, he performed a lot better when facing Ezreal than with many other typical item sets. In fact, Karthus boasted an average win rate of 50.5% when countering Ezreal with this counter build.
To have the highest chance of defeating Ezreal 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. Out of all the rune builds players chose for Karthus vs Ezreal face-offs, this sequence of runes resulted in the highest win rate. Notably, these runes provided a 50.5% winrate overall.
By default, tips, statistics, and builds on how to beat Ezreal as Karthus are displayed for all skill levels, merged. To filter the stats and builds to a particular skill level, you should use the selection menu above.