Valkyrie can be used defensively as well, so try using it for a quick escape.
Phosphorus Bomb can be used to reveal enemy units that might be hiding in a nearby patch of brush.
Corki can continue to attack while using Gatling Gun. Maximizing Gatling Gun is key to mastering Corki.
Use the time after Sion has died to reposition and prepare for his return.
Even if Sion still hits a Decimating Smash, making him release the charge earlier reduces its impact.
The stats shown here clarify several strategic Corki against Sion counter statistics that can help us realize the distinctions between the two. Corki’s KDA ratio ([kills + assists] / deaths) of NaN is greater than Sion’s ratio of NaN, indicating that Corki may be more central to his team's team fighting effectiveness than Sion. This observation is largely fueled by the difference in kills.
Corki often has a slightly larger longest killing spree than his matchup does. On average, he takes less damage than Sion. This typically indicates different amounts of tankyness, but it can also indicate that the one champ has less mobility and thus is unable to escape further damage when engaged or poked.
Both League champs are great champions. Both have their strengths, weaknesses, and counters. In the game's current meta, Corki usually loses when taking on Sion, with a 46.7% win rate. As a result, Corki makes a bad counter for Sion.
While Corki does have a lower win rate than Sion, when on opposite teams, Corki also has a greater difficulty level that makes him a more time consuming character to pick up and master. You should be very concerned when picking Corki into Sion.
Moreover, Corki also has only a small amount of utility and CC, a similar amount to Sion. This makes her just as valuable during teamfights, especially when facing champions with a lot of burst damage.
While there isn't one best champion for every situation in League of Legends, in Corki vs Sion matchups, Sion is the better champ with a much lower win rate, more champion depth, and a similar amount of utility to help out your teammates during teamfights.
Corki is a garbage counter for Sion. Focus your gameplay on keeping up your CS and destroying objectives. If you are able to do that, you should do very well as Corki against Sion.
To truly master Corki in order to counter Sion during both the laning and mid / late game phases of League of Legends, you should continue reading to learn a few extra lessons on this matchup. If you pay attention to the build and tips displayed here, you should grow your win rate by a lot and be closer to League of Legends pro players.
Corki on average gets a similar amount of CS relative to Sion. Champs who typically don't acquire much CS typically don't have to have much CS to be valuable teammates, such as sup champs. These kinds of champions are capable of scaling well off of their skills, stats, and first items alone. Yet, champions with a lot of CS, such as hyper-carries, usually need many items to be effective. In either situation, try to exceed the numbers reported on this page to do well.
The best items to have in your Corki versus Sion build consist of Muramana, Trinity Force, and Eclipse. When Corki incorporated at least these three items in his build, he performed much better countering Sion than with many other commonly used item sets. In fact, Corki boasted an average win rate of 46.7% when countering Sion with this build.
To have the best likelihood of coming out on top against Sion as Corki, you should take the First Strike, Magical Footwear, Biscuit Delivery, Cosmic Insight, Bone Plating, and Overgrowth runes from the Inspiration and Resolve rune sets. Of all the rune builds players used for Corki vs Sion counter picks, this mixture of runes yielded the highest win rate. Moreover, these runes provided a 46.7% winrate overall.
If you want to see Corki vs Sion tips and counter stats for a an individual division rank, feel free to select one from the selection menu above. If viewing for the first time, the statistics and build suggestions shown are calculated using every game played with both champs.