Gwen can still damage enemies outside her Hallowed Mists, especially with her Ultimate's range.
Some of Gwen's Abilities can apply her passive to multiple enemies, so aim them at groups to get maximum damage and healing.
Always be Attacking - In addition to dealing bonus damage, Gwen's Attacks empower or reset many of her Abilities.
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 provided here feature some significant Gwen vs. Sion counter statistics that may help us explain the differences and similarities between the two. As an example, Gwen’s KDA ratio ([kills + assists] / deaths) of NaN is better than Sion’s ratio of NaN, indicating that Gwen may be more central to her team's team fighting capacity than Sion..
Gwen usually has a slightly larger longest kill spree than her foe does. Commonly, she receives less damage than Sion. This typically indicates different amounts of tankyness, but it can also hint that the champion with higher HP has less mobility and thus is not able to escape further damage when poked or engaged.
Both League of Legends champs are great. Both champs have their strengths, weaknesses, and counters. In the game's current meta, Gwen usually fairs equally well when trying to fight Sion, with a 50.0% win rate. As a result, Gwen makes an ok counter to Sion.
While Gwen does have a higher win rate compared to Sion, when facing one another, Gwen also has a greater level of difficulty that makes her a more time consuming character to pick up and master. You should be careful when picking Gwen into Sion.
Moreover, Gwen also has some amount of CC and other utility, a similar amount to Sion. This makes her just as valuable during teamfights, especially when fighting champions with a ton of burst damage.
While there isn't a single best champion for every situation in League of Legends, in Gwen vs Sion matchups, Sion is the better champion with a similar win rate, similar champion depth, and a similar amount of utility to help out your allied champions during teamfights.
Gwen is a decent counter for Sion. Focus your play on increasing your gold income and clearing objectives. If you are able to do that, you should hold your own as Gwen against Sion.
If you would like to truly master Gwen in order to counter Sion during both the lane and mid / late game phases of League of Legends, you should keep reading to learn a few extra tricks and insights into this matchup. If you pay attention to the build and suggestions presented above, you will increase your win rate significantly and be closer to League of Legends pro players.
Gwen usually picks up a similar amount of CS compared to Sion. Champions who typically don't get much CS often don't need much CS to be valuable teammates, such as supports. These kinds of champions are able to scale well off of their skills, stats, and first items alone. Yet, champs with large amounts of CS, such as hyper-carries, often require several high cost items to be effective. In either case, try to do better than the numbers shown here to do well.
The most important items to focus on in your Gwen versus Sion build include Nashor's Tooth, Void Staff, and Riftmaker. When Gwen combined at least these three items in her build, she performed a lot better countering Sion than with most other commonly used item sets. In fact, Gwen had an average win rate of 50.0% when countering Sion with this counter build.
To have the highest chance of annihilating Sion as Gwen, you should equip the Conqueror, Presence of Mind, Legend: Alacrity, Last Stand, Bone Plating, and Unflinching runes from the Precision and Resolve rune sets. Of all the rune builds that we analyzed for Gwen vs Sion fights, this sequence of runes resulted in the highest win rate. Notably, these runes gave a 50.0% win rate overall.
If you need to see Gwen x Sion tips and builds for a a particular rank, please select one from the selection menu shown above. At first, the stats and build suggestions given are calculated using all games finished with these champs.