Your most important function as a support is to keep fragile allies safe. Keep Devour's range and cooldown in mind and position accordingly!
Consider carefully when to use Thick Skin's active. Sometimes shielding early to avoid further damage is good, but sometimes the healing is more beneficial.
Katarina's abilities deal magic damage, so even if she's building Attack Damage items, get magic resistance to counter her.
Try to save a disable for when Katarina uses her Death Lotus.
The stats shown here show several vital Tahm Kench against Katarina counter statistics that may help us understand the differences between the two. As an example, Tahm Kench’s KDA ratio ([kills + assists] / deaths) of NaN is better than Katarina’s ratio of NaN, indicating that Tahm Kench may be more central to his team's team fighting effectiveness than Katarina..
Tahm Kench normally has a significantly smaller longest kill spree than his enemy does. On average, he takes more damage than Katarina. This is usually reflective of different amounts of tankyness, but it can also illustrate that the champ with more HP has less agility and thus is not able to flee from additional harm when poked or engaged.
Both League champs are great champions. Both have their strengths, weaknesses, and counters. In League's current meta, Tahm Kench usually wins when trying to fight Katarina, with a 52.3% win rate. Therefore, Tahm Kench makes a good counter to Katarina.
While Tahm Kench does have a higher win rate compared to Katarina, when facing one another, Tahm Kench also has a lower learning curve that makes him a less complex character to learn. You should be be fine when picking Tahm Kench into Katarina.
Furthermore, Tahm Kench has a good amount of utility and CC, a similar amount to Katarina. This often makes her just as valuable during team fights, especially when trying to counter champions with a ton of burst damage.
While there is not a single best champion in League of Legends, in Tahm Kench vs Katarina matchups, Tahm Kench is the better champ with a noticably higher win rate, less champion complexity, and a similar amount of utility to help out your allied champions during teamfights.
Tahm Kench is a good counter for Katarina. You will do well by focussing your play on increasing your gold and cs and destroying objectives. If you can do that, you should be able to stand on your own as Tahm Kench against Katarina.
If you would like to truly master Tahm Kench in order to counter Katarina during both the laning and mid / late game phases of League of Legends, you should continue reading to pick up a few extra tricks and insights into this matchup. If you mind the build and tips displayed above, you should increase your win rate by a lot and be that much closer to League of Legends pro players.
Tahm Kench often racks up a similar amount of CS compared to Katarina. Champions who typically don't take many minion kills usualy don't have to have much CS to be valuable teammates, such as sup champs. These kinds of champions are capable of scaling properly off of their skills, stats, and first items alone. Yet, champions with a lot of CS, such as hyper-carries, typically require several high cost items to be effective. In either case, try to surpass the numbers displayed on this page to do well.
The most important items to prioritize in your Tahm Kench versus Katarina build include Spirit Visage, Sunfire Aegis, and Heartsteel. When Tahm Kench used at least these three pieces in his build, he performed significantly better vs. Katarina than with many other typical builds. In fact, Tahm Kench boasted an average winrate of 52.3% when countering Katarina with this counter build.
To have the highest probability of beating Katarina as Tahm Kench, you should use the Grasp of the Undying, Shield Bash, Second Wind, Unflinching, Legend: Alacrity, and Triumph runes from the Resolve and Precision rune sets. Out of all the rune combinations players chose for Tahm Kench vs Katarina counter picks, this order of runes yielded the highest win rate. Notably, these runes gave a 52.3% winrate overall.
By default, tips, stats, and builds on how to beat Katarina as Tahm Kench are presented for all ranked divisions combined. If you want to scope the statistics and builds to a particular skill level, you may use the selection menu earlier in the counter matchup guide.