Don't be too conservative with Mantra. Gathering Fire is strongest in teamfights, making it easy to recharge Mantra multiple times.
Gathering Fire rewards aggressive play. Look to land abilities and basic attacks on your opponent to lower Mantra's cooldown and stay on the offensive.
When using Focused Resolve, slow your opponents with Inner Flame or speed yourself up with Inspire if you're having trouble sticking to a target.
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 underscore some valuable Karma vs. Xerath counter stats that may help you interpret the distinctions between this pair of champs. For instance, Karma’s KDA ratio ([kills + assists] / deaths) of NaN is better than Xerath’s KDA ratio of NaN, showing that Karma may be more central to her team's team fighting capacity than Xerath..
Karma often has a slightly smaller longest kill spree than her counter does. Typically, she receives more damage than Xerath. This commonly reflects differing health capacities, yet it can also illustrate that the champion with more HP has less agility and thus is unable to escape further damage when engaged or poked.
Both LoL champions are great champions. Both have their pros and cons. In League's current meta, Karma usually loses when trying to fight Xerath, with a 48.4% win rate. Therefore, Karma makes a poor counter for Xerath.
While Karma does have a lower winrate compared to Xerath, when they face off with one another, Karma also has a lower difficulty level that makes her a less difficult champ to develop with. You still need to be cautious when picking Karma into Xerath.
Furthermore, Karma also has a good amount of utility and CC, a similar amount to Xerath. 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 Karma vs Xerath matchups, Xerath is the better champ with a lower win rate, less champion complexity, and a similar amount of utility to help out your teammates during late stage team fights.
Karma is a somewhat poor counter for Xerath. Make sure you focus your play on keeping up your gold income and destroying objectives. If you are able to do that, you should be able to stand on your own as Karma against Xerath.
To truly master Karma 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 listen to the build and stats presented above, you will increase your win rate significantly and be that much closer to League of Legends pro players.
Karma on average gets less CS compared to Xerath. Champs who on average don't get many minion kills typically don't need much CS to be effective, such as support champions. They are capable of scaling well off of their skills, stats, and first items alone. Yet, champions with large amounts of CS, such as hyper-carries, often require many items to be effective. In either situation, try to do better than the numbers shown on this page to do well.
The best items to use in your Karma versus Xerath build include Malignance, Zaz'Zak's Realmspike, and Staff of Flowing Water. When Karma bought at least these three pieces in her build, she did a lot better against Xerath than with most other typical item sets. In fact, Karma had an average winrate of 48.4% battling Xerath with this counter build.
To have the best probability of crushing Xerath as Karma, you should equip the Summon Aery, Manaflow Band, Transcendence, Scorch, Biscuit Delivery, and Cosmic Insight runes from the Sorcery and Inspiration rune sets. Out of all the rune builds players used for Karma vs Xerath matchups, this mixture of runes yielded the greatest win rate. Moreover, these runes averaged a 48.4% winrate overall.
By default, tips, statistics, and builds on how to beat Xerath as Karma are displayed for all ranked divisions. To narrow the stats and builds to a distinct skill level, you may use the selection menu located earlier on the page.