Save Crescendo for the game-altering moment.
Well-timed uses of Aria of Perseverance will grant you maximum survivability.
Make sure to tag your allies while Sona's auras are active, but avoid getting caught out by enemies.
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 stats shown here show some important Sona against Cassiopeia matchup statistics that can help you grasp the distinctions between the two. For instance, Sona’s KDA ratio ([kills + assists] / deaths) of NaN is greater than Cassiopeia’s ratio of NaN, highlighting that Sona may be more central to her team's team fighting effectiveness than Cassiopeia. This observation is in large part fueled by the differences in assists.
Sona typically has a significantly smaller longest killing spree than her counter does. Commonly, she receives less damage than Cassiopeia. This typically indicates different amounts of tankyness; however, it can also imply that the one champion has less mobility and thus is unable to escape additional damage when engaged or poked.
Both League champs are great. Both have their strengths, weaknesses, and counters. In League's current meta, Sona usually wins when trying to fight Cassiopeia, with a 52.7% win rate. Therefore, Sona makes a good counter to Cassiopeia.
While Sona does have a higher win rate compared to Cassiopeia, when they face off with one another, Sona also has a much lower learning curve that makes her a less complex character to pick up and master. You don't need to be too worried when picking Sona into Cassiopeia.
Furthermore, Sona has a great deal of CC and other utility, a similar amount to Cassiopeia. This makes her just as valuable during team fights, especially when fighting champions with a ton of burst damage.
While there is not one best champion overall in League of Legends, in Sona vs Cassiopeia matchups, Sona is the better champion with a noticably higher win rate, less champion complexity, and a similar amount of utility to help out your allies during late stage team fights.
Sona is an above average counter to Cassiopeia. You will do well by focussing your strategy on maximizing your gold and cs and clearing objectives. If you are able to do that, you should be able to stand on your own as Sona against Cassiopeia.
If you would like to learn all of the intricacies of Sona to counter Cassiopeia during both the lane and mid / late game phases of League of Legends, you should continue reading to learn a few extra tips and tricks for this matchup. If you mind the build and stats displayed above, you will grow your win rate by a lot and be closer to League of Legends pro players.
Sona typically accumulates a lot less CS relative to Cassiopeia. Champs who typically don't take many minion kills typically don't require much CS to be valuable teammates, 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 have to have a lot of items to be effective. In either case, try to exceed the values reported here to do well.
The ideal items to use in your Sona versus Cassiopeia build consist of Moonstone Renewer, Chemtech Putrifier, and Shard of True Ice. When Sona combined at least these three pieces in her build, she performed a lot better when facing Cassiopeia than with many other commonly used builds. In fact, Sona boasted an average win rate of 52.7% battling Cassiopeia with this counter build.
To have the greatest likelihood of vanquishing Cassiopeia as Sona, you should equip the Summon Aery, Manaflow Band, Transcendence, Gathering Storm, Conditioning, and Revitalize runes from the Sorcery and Resolve rune sets. Of all the runes players chose for Sona vs Cassiopeia fights, this blending of runes resulted in the highest win rate. Moreover, these runes provided a 52.7% win rate overall.
If you want to see Sona versus Cassiopeia tips and matchup stats and build suggestions for a a specific rank, please select one from the selection menu displayed above. If viewing for the first time, the stats and guides displayed are calculated using every game run with both champions.