Lead your enemy when targeting with Noxious Blast to ensure the hit.
Use Twin Fang on poisoned stationary targets like monsters and units stunned by her Petrifying Gaze for maximum damage.
When laning against Sivir, it is possible to throw off the timing of her Spell Shield by faking an advance, then backing off.
Sivir is a powerful pushing champion, so leaving her unattended in a lane for too long will often result in your turrets being destroyed.
Boomerang Blade costs a lot of mana to cast, so dodging it sets Sivir back. If it hits you on the way out, avoid its path on the way back.
The stats shown here emphasize some vital Cassiopeia versus Sivir counter statistics that may help us understand the distinctions between these two champions. For instance, Cassiopeia’s KDA ratio ([kills + assists] / deaths) of NaN is better than Sivir’s KDA ratio of NaN, demonstrating that Cassiopeia may be more central to her team's team fighting effectiveness than Sivir..
Cassiopeia usually has a slightly larger longest kill spree than her foe does. Commonly, she receives more damage than Sivir. This commonly reflects different amounts of tankyness, yet it can also hint that the one champion has less agility and thus is not able to flee from additional harm when engaged or poked.
Both League of Legends champs are great. Both have their pros and cons. In the game's current meta, Cassiopeia usually fairs equally well when trying to fight Sivir, with a 50.6% win rate. Therefore, Cassiopeia makes an ok counter for Sivir.
While Cassiopeia does have a higher win rate than Sivir, when facing one another, Cassiopeia also has a much greater difficulty level that makes her a more difficult champion to develop with. You still need to be cautious when picking Cassiopeia into Siviras her relative depth means that you may not be able to reach her full potential without a lot of practice beforehand.
Additionally, Cassiopeia also has a good amount of utility and CC, a similar amount to Sivir. This often makes her just as valuable during teamfights, especially when fighting champions with a lot of burst damage.
While there is not a single best champion for every situation in League of Legends, in Cassiopeia vs Sivir matchups, Cassiopeia is the better champion with a similar win rate, more champion depth, and a similar amount of utility to help out your team members during team fights.
Cassiopeia is a decent counter to Sivir. Focus your actions on keeping up your CS and taking out objectives. If you are able to do that, you should be able to stand on your own as Cassiopeia against Sivir.
If you would like to truly master Cassiopeia to counter Sivir during both the laning and mid / late game phases of League of Legends, you should continue reading to learn a few extra tricks and insights into this matchup. If you listen to the build and stats presented here, you will increase your win rate significantly and be closer to League of Legends pro players.
Cassiopeia on average racks up a similar amount of CS as Sivir. Champions who on average don't acquire many minion kills usualy don't have to have much CS to be effective, such as support champions. These kinds of champions are able to scale properly off of their abilities and first items alone. Yet, champs with a lot of CS, such as hyper-carries, often have to have a lot of items to be effective. In either situation, try to do better than the values reported here to do well.
The top items to have in your Cassiopeia versus Sivir build include Seraph's Embrace, Rylai's Crystal Scepter, and Liandry's Torment. When Cassiopeia combined at least these three items in her build, she performed much better when fighting Sivir than with many other commonly used counter builds. In fact, Cassiopeia had an average winrate of 50.6% when playing against Sivir with this build.
To have the greatest chance of defeating Sivir as Cassiopeia, you should use the Conqueror, Presence of Mind, Legend: Tenacity, Last Stand, Manaflow Band, and Transcendence runes from the Precision and Sorcery rune sets. Out of all the rune combinations players picked for Cassiopeia vs Sivir clashes, this mix of runes yielded the greatest win rate. Moreover, these runes gave a 50.6% winrate overall.
By default, tips, statistics, and builds on how to beat Sivir as Cassiopeia are displayed for all ranked divisions. If you want to scope the stats and builds to a particular skill level, you can use the selection menu earlier in the counter matchup guide.