Zed's Shadow Slash can only slow you if his shadow hits you with it.
Zed receives bonus effect from Attack Damage items he purchases, so Armor is super effective against him.
After Zed uses his Living Shadow, he is at his most vulnerable as his damage, slow, and mobility are both dependent upon it.
The stat comparisons shown on this page emphasize several valuable Senna vs. Zed counter stats that can help us interpret the differences between this set of champions. For instance, Senna’s KDA ratio ([kills + assists] / deaths) of NaN is greater than Zed’s KDA ratio of NaN, showing that Senna may be more central to her team's team fighting potential than Zed. This observation is largely a result of the differences in assists.
Senna usually has a significantly smaller longest kill spree than her counter does. Typically, she takes less damage than Zed. This is usually reflective of different amounts of tankyness; however, it can also show that the champion with increased HP has less agility and thus is not able to kite away from additional harm when poked or engaged.
Both League champions are great champions. Both have their strengths, weaknesses, and counters. In the game's current meta, Senna usually wins when trying to fight Zed, with a 51.7% win rate. As a result, Senna makes a good counter to Zed.
While Senna does have a higher win rate compared to Zed, when facing one another, Senna also has a greater learning curve that makes her a more challenging character to pick up and master. You should be careful when picking Senna into Zedas her relative depth means you may not be able to unleash her full potential without a lot of practice beforehand.
Moreover, Senna also has a good amount of CC and other utility, a similar amount to Zed. This makes her just as valuable during team fights, especially when trying to counter champions with a lot of burst damage.
While there is not one best champion overall in League of Legends, in Senna vs Zed matchups, Senna is the better champion with a higher win rate, similar champion depth, and a similar amount of utility to help out your teammates during late stage team fights.
Senna is a decent counter to Zed. Make sure you focus your strategy on keeping up your CS and clearing objectives. If you do that, you should hold your own as Senna against Zed.
If you would like to truly master Senna to counter Zed during both the early game and mid / late game phases of League of Legends, you should keep reading to gather a few extra tricks and insights into this matchup. If you listen to the build and stats displayed here, you will grow your win rate by a lot and be closer to League of Legends pro players.
Senna on average gets less CS as Zed. Champions who on average don't get many minion kills typically don't have to have much CS to be valuable teammates, such as supports. These kinds of champions are able to scale well off of their abilities and first items alone. Yet, champs with a lot of CS, such as hyper-carries, typically require a lot of items to be effective. In either case, try to exceed the numbers displayed on this page to do well.
The most important items to have in your Senna versus Zed build include Infinity Edge, Youmuu's Ghostblade, and Bloodsong. When Senna combined at least these three items in her build, she did significantly better when facing Zed than with many other common counter builds. In fact, Senna had an average winrate of 51.7% battling Zed with this build.
To have the best chance of defeating Zed as Senna, you should use the Fleet Footwork, Presence of Mind, Legend: Alacrity, Cut Down, Approach Velocity, and Biscuit Delivery runes from the Precision and Inspiration rune sets. Of all the rune builds players picked for Senna vs Zed matchups, this combination of runes resulted in the highest win rate. In fact, these runes gave a 51.7% win rate overall.
By default, tips, statistics, and builds on how to beat Zed as Senna are displayed for all ranked divisions combined. If you would like to scope the statistics and builds to a distinct rank, you can use the selection menu earlier on the page.