Nami's ultimate can come in very handy for initiating on enemies who are far away.
Using Ebb and Flow during an engagement with enemy champions will help sway the battle in your favor.
Aqua Prison has a long cooldown, make sure to use it at the right moment.
Be wary of Cassiopeia's damage potential with Twin Fang when she has you poisoned.
Turn away from Cassiopeia when she is casting Petrifying Gaze to get slowed instead of stunned.
The stat comparisons shown on this page underscore some influential Nami against Cassiopeia matchup stats that can help you understand the distinctions between the pair. For instance, Nami’s KDA ratio ([kills + assists] / deaths) of NaN is better than Cassiopeia’s KDA ratio of NaN, indicating that Nami may be more central to her team's team fighting effectiveness than Cassiopeia. This observation is largely caused by the differences in assists.
Nami usually has a significantly smaller longest kill spree than her foe does. Typically, she takes less damage than Cassiopeia. This commonly reflects different amounts of tankyness, but it can also indicate that the champion with higher health has less agility and thus is not able to flee from additional harm when engaged or poked.
Both League of Legends champions are great. Both have their strengths, weaknesses, and counters. In the game's current meta, Nami usually loses when facing off against Cassiopeia, with a 47.9% win rate. Therefore, Nami makes a bad counter for Cassiopeia.
While Nami does have a lower winrate compared to Cassiopeia, when on opposite teams, Nami also has a much lower level of difficulty that makes her a less time consuming character to learn and master. You should be very concerned when picking Nami into Cassiopeia.
Additionally, Nami has a great amount of utility and CC, a similar amount to Cassiopeia. This 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 in League of Legends, in Nami vs Cassiopeia matchups, Cassiopeia is the better champion with a lower win rate, less champion complexity, and a similar amount of utility to help out your team members during teamfights.
Nami is a bad counter to Cassiopeia. Make sure you focus your play on increasing your gold and cs and taking out objectives. If you can do that, you should be able to stand on your own as Nami against Cassiopeia.
If you would like to truly master Nami in order to counter Cassiopeia during both the lane and mid / late game phases of League of Legends, you should continue reading to pick up a few extra lessons on this matchup. If you pay attention to the build and stats displayed above, you will increase your win rate significantly and be closer to League of Legends pro players.
Nami often gets a lot less CS relative to Cassiopeia. Champs who on average don't earn much CS typically don't need much CS to be valuable teammates, such as supports. These kinds of champions are capable of scaling well off of their abilities and first items alone. Yet, champions 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 shown on this page to do well.
The most important items to have in your Nami versus Cassiopeia build include Ardent Censer, Dream Maker, and Staff of Flowing Water. When Nami combined at least these three items in her build, she performed a lot better when facing Cassiopeia than with many other commonly used counter builds. In fact, Nami had an average winrate of 47.9% when countering Cassiopeia with these items in her kit.
To have the highest chance of crushing Cassiopeia as Nami, you should take the Summon Aery, Manaflow Band, Transcendence, Scorch, Biscuit Delivery, and Cosmic Insight runes from the Sorcery and Inspiration rune sets. Of all the rune combinations players chose for Nami vs Cassiopeia LoL games, this set of runes yielded the highest win rate. In fact, these runes gave a 47.9% winrate overall.
By default, tips, statistics, and builds on how to beat Cassiopeia as Nami are displayed for all skill levels combined. If you would like to scope the statistics and builds to a specific rank, you should use the selection menu located above.