Make the most out of your Icathian Surprise.
Use Void Ooze to set up a perfect Living Artillery.
Kog'Maw can outrange most champions with his Bio-Arcane Barrage ability.
Xerath's range can be intimidating, but most champions who close distance with him can trade favorably.
Banshee's Veil will make it much harder for Xerath to land Shocking Orb on you.
Xerath takes a long time to engage Rite of the Arcane. Watch for his spellcast animation and start dodging.
The stat comparisons shown on this page show several significant Kog'Maw versus Xerath counter statistics that may help you interpret the differences between the two. As an example, Kog'Maw’s KDA ratio ([kills + assists] / deaths) of NaN is more than Xerath’s KDA ratio of NaN, indicating that Kog'Maw may be more central to his team's team fighting capability than Xerath. This observation is in large part fueled by the differences in deaths.
Kog'Maw typically has a similar longest killing spree as his enemy does. Commonly, he takes more damage than Xerath. This typically indicates different amounts of tankyness; however, it can also illustrate that the one champion has less mobility and thus is unable to escape additional damage when poked or engaged.
Both League champions are great champions. Both have their pros and cons. In League's current meta, Kog'Maw usually loses when playing against Xerath, with a 47.1% win rate. Therefore, Kog'Maw makes a poor counter for Xerath.
While Kog'Maw does have a lower winrate compared to Xerath, when on opposite teams, Kog'Maw also has a lower difficulty level that makes him a less complex character to learn. You should expect to face a difficult match when picking Kog'Maw into Xerath.
Furthermore, Kog'Maw has almost no amount of CC and other utility, a similar amount to Xerath. This often makes her just as valuable during teamfights, especially when trying to counter champions with a ton of burst damage.
While there isn't one best champion for every situation in League of Legends, in Kog'Maw vs Xerath matchups, Xerath is the better champion with a lower win rate, less champion complexity, and a similar amount of utility to help out your teammates during team fights.
Kog'Maw is a bad counter for Xerath. Focus your tactics on increasing your gold income and taking out objectives. If you are able to do that, you should be able to stand on your own as Kog'Maw against Xerath.
To truly master Kog'Maw in order to counter Xerath during both the laning and mid / late game phases of League of Legends, you should continue reading to learn a few extra lessons on this matchup. If you mind the build and tips displayed here, you should increase your win rate significantly and be closer to League of Legends pro players.
Kog'Maw typically racks up more CS as Xerath. Champs who typically don't acquire many minion kills typically don't have to have much CS to be effective, such as support champions. These kinds of champions are capable of scaling well off of their skills, stats, and first items alone. Yet, champs with a lot of CS, such as hyper-carries, often have to have many items to be effective. In either case, try to do better than the values reported on this page to do well.
The most important items to use in your Kog'Maw versus Xerath build include Runaan's Hurricane, Blade of The Ruined King, and Terminus. When Kog'Maw incorporated at least these three pieces in his build, he did much better vs Xerath than with many other commonly used counter builds. In fact, Kog'Maw boasted an average win rate of 47.1% battling Xerath with this build.
To have the best likelihood of annihilating Xerath as Kog'Maw, Kog'Maw players should use the Lethal Tempo, Triumph, Legend: Bloodline, Last Stand, Conditioning, and Overgrowth runes from the Precision and Resolve rune sets. Of all the rune combinations players chose for Kog'Maw vs Xerath LoL games, this order of runes yielded the best win rate. In fact, these runes gave a 47.1% win rate overall.
By default, tips, stats, and builds on how to beat Xerath as Kog'Maw are given for every ranked division. To scope the statistics and builds to an individual division, you should use the selection menu located earlier on the page.