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.
Staying behind creeps can prevent you from being Rocket Grabbed. Blitzcrank's Rocket Grab only pulls the first enemy target it encounters.
Blitzcrank's passive Mana Barrier grants him a shield when he is low on health.
The stat comparisons provided here clarify several significant Karthus against Blitzcrank matchup stats that can help you explain the distinctions between the pair. Karthus’s KDA ratio ([kills + assists] / deaths) of NaN is better than Blitzcrank’s ratio of NaN, indicating that Karthus may be more central to his team's team fighting capacity than Blitzcrank. This observation is largely a result of the difference in kills.
Karthus normally has a much larger longest killing spree than his counter does. Commonly, he takes more damage than Blitzcrank. This typically indicates different amounts of tankyness; however, it can also illustrate that the one champion has less mobility and thus is not able to flee from additional damage when poked or engaged.
Both League champs are great champions. Both champs have their strengths, weaknesses, and counters. In League's current meta, Karthus usually loses when facing off against Blitzcrank, with a 46.1% win rate. Therefore, Karthus makes a poor counter for Blitzcrank.
While Karthus does have a lower winrate compared to Blitzcrank, when on opposite teams, Karthus also has a much greater learning curve that makes him a more challenging champion to learn. You may get destroyed when picking Karthus into Blitzcrankas his relative depth means you may not be able to reach his full potential without a lot of practice beforehand.
Additionally, Karthus also has some amount of utility and CC, a similar amount to Blitzcrank. This makes her just as valuable during team fights, especially when fighting champions with a ton of burst damage.
While there is not a single best champion in League of Legends, in Karthus vs Blitzcrank matchups, Blitzcrank is the better champion with a much lower win rate, more champion depth, and a similar amount of utility to help out your team members during team fights.
Karthus is a bad counter to Blitzcrank. Make sure you focus your gameplay on maximizing your gold and cs and clearing objectives. If you are able to do that, you should do very well as Karthus against Blitzcrank.
If you would like to truly master Karthus in order to counter Blitzcrank during both the early game and mid / late game phases of League of Legends, you should keep reading to pick up a few extra tips and tricks for this matchup. If you pay attention to the build and tips shown above, you should grow your win rate by a lot and be that much closer to League of Legends pro players.
Karthus usually racks up more CS relative to Blitzcrank. Champs who typically don't take many minion kills usualy don't need much CS to be valuable teammates, such as support champions. These kinds of champions are capable of scaling properly off of their abilities and first items alone. Yet, champions 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 do better than the values shown on this page to do well.
The top items to use in your Karthus versus Blitzcrank build include Rabadon's Deathcap, Malignance, and Stormsurge. When Karthus incorporated at least these three items in his build, he did much better against Blitzcrank than with most other common counter builds. In fact, Karthus had an average win rate of 46.1% battling Blitzcrank with these items in his kit.
To have the highest likelihood of vanquishing Blitzcrank as Karthus, Karthus players should use 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 combinations we have analyed for Karthus vs Blitzcrank clashes, this order of runes yielded the greatest win rate. In fact, these runes averaged a 46.1% win rate overall.
By default, tips, statistics, and builds on how to beat Blitzcrank as Karthus are shown for all skill levels, merged. If you would like to filter the statistics and builds to an individual rank, you may use the selection menu earlier in the counter matchup guide.