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.
Attack Ornn to keep him from creating items in lane.
Try to stay away from walls. Ornn is much less strong if he cannot stun you.
The stat comparisons shown here show several important Cassiopeia versus Ornn counter stats that may help you realize the distinctions between the pair. Cassiopeia’s KDA ratio ([kills + assists] / deaths) of NaN is greater than Ornn’s KDA ratio of NaN, indicating that Cassiopeia may be more central to her team's team fighting effectiveness than Ornn..
Cassiopeia typically has a slightly larger longest kill spree than her counter does. On average, she takes less damage than Ornn. This commonly reflects different amounts of tankyness, yet it can also indicate that the champ with higher HP has less agility and thus is unable to kite away from further harm when engaged or poked.
Both LoL champs are great champions. Both have their strengths, weaknesses, and counters. In League's current meta, Cassiopeia usually fairs equally well when trying to fight Ornn, with a 50.1% win rate. As a result, Cassiopeia makes an ok counter for Ornn.
While Cassiopeia does have a higher winrate than Ornn, when facing one another, Cassiopeia also has a much greater learning curve that makes her a more challenging character to pick up and master. You still need to be cautious when picking Cassiopeia into Ornnas her relative depth means that you may not be able to reach her full potential without a significant amount of practice beforehand.
Additionally, Cassiopeia has a good amount of CC and other utility, a similar amount to Ornn. This makes her just as valuable during teamfights, especially when fighting champions with a ton of burst damage.
While there is not one best champion in League of Legends, in Cassiopeia vs Ornn matchups, Cassiopeia is the better champ with a similar win rate, more champion depth, and a similar amount of utility to help out your allied champions during teamfights.
Cassiopeia is a decent counter for Ornn. Make sure you focus your strategy on keeping up your CS and destroying objectives. If you are able to do that, you should be able to stand on your own as Cassiopeia against Ornn.
If you would like to truly master Cassiopeia in order to counter Ornn during both the early game 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 suggestions displayed above, you will grow your win rate by a lot and be that much closer to League of Legends pro players.
Cassiopeia typically picks up a similar amount of CS relative to Ornn. Champions who typically don't take much CS usualy don't require much CS to be effective, such as sup champs. These kinds of champions are able to scale properly off of their skills, stats, and first items alone. Yet, champs with large amounts of CS, such as hyper-carries, often need several high cost items to be effective. In either situation, try to exceed the values shown here to do well.
The top items to focus on in your Cassiopeia versus Ornn build include Liandry's Anguish, Seraph's Embrace, and Void Staff. When Cassiopeia incorporated at least these three pieces in her build, she did significantly better vs Ornn than with many other typical builds. In fact, Cassiopeia boasted an average win rate of 50.1% when countering Ornn with these items in her kit.
To have the greatest probability of defeating Ornn as Cassiopeia, you should use the Conqueror, Presence of Mind, Legend: Tenacity, Last Stand, Conditioning, and Overgrowth runes from the Precision and Resolve rune sets. Of all the rune sets that we analyzed for Cassiopeia vs Ornn counter picks, this sequence of runes yielded the highest win rate. Moreover, these runes provided a 50.1% winrate overall.
By default, tips, statistics, and builds on how to beat Ornn as Cassiopeia are shown for all ranked divisions. If you would like to scope the stats and builds to a particular division, you should use the selection menu located above.