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 stat comparisons shown on this page highlight some influential Vex versus Sion matchup statistics that can help us distinguish the differences and similarities between the two. Vex’s KDA ratio ([kills + assists] / deaths) of NaN is more than Sion’s ratio of NaN, demonstrating that Vex may be more central to their team's team fighting capability than Sion..
Vex often has a slightly larger longest killing spree than their matchup does. Commonly, they receives less damage than Sion. This commonly reflects differing health capacities, but it can also indicate that the one champion has less mobility and thus is unable to flee from additional damage when poked or engaged.
Both League champions are great. Both have their pros and cons. In the game's current meta, Vex usually loses when trying to fight Sion, with a 48.2% win rate. Therefore, Vex makes a bad counter to Sion.
While Vex does have a lower win rate than Sion, when they face off with one another, Vex also has a much lower difficulty level that makes them a less challenging character to pick up and master. You still need to be cautious when picking Vex into Sion.
Furthermore, Vex also has some amount of CC and other utility, a similar amount to Sion. This makes her just as valuable during team fights, especially when trying to counter champions with a ton of burst damage.
While there isn't a single best champion for every situation in League of Legends, in Vex vs Sion matchups, Sion is the better champ with a lower win rate, less champion complexity, and a similar amount of utility to help out your teammates during late stage team fights.
Vex is a somewhat poor counter to Sion. You will do well by focussing your strategy on keeping up your CS and clearing objectives. If you are able to do that, you should do very well as Vex against Sion.
To truly master Vex 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 listen to the build and tips shown above, you will grow your win rate significantly and be that much closer to League of Legends pro players.
Vex often picks up a similar amount of CS as Sion. Champs who typically don't acquire much CS typically don't need much CS to be valuable teammates, such as support champions. They are able to scale well off of their skills, stats, and first items alone. Yet, champions with a lot of CS, such as hyper-carries, usually have to have many items to be effective. In either case, try to surpass the numbers shown here to do well.
The best items to prioritize in your Vex versus Sion build consist of Rabadon's Deathcap, Shadowflame, and Stormsurge. When Vex included at least these three items in their build, they did much better when facing Sion than with most other commonly used counter builds. In fact, Vex boasted an average win rate of 48.2% battling Sion with these items in their kit.
To have the greatest likelihood of crushing Sion as Vex, Vex players should take the Dark Harvest, Taste of Blood, Eyeball Collection, Ultimate Hunter, Manaflow Band, and Transcendence runes from the Domination and Sorcery rune sets. Out of all the rune combinations we have analyed for Vex vs Sion matchups, this set of runes resulted in the best win rate. Moreover, these runes provided a 48.2% win rate overall.
By default, tips, stats, and builds on how to beat Sion as Vex are presented for all skill levels, merged. If you would like to scope the stats and builds to an individual skill level, you may use the selection menu located earlier in the counter matchup guide.