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 feature some vital Rell against Sion counter statistics that may help you realize the distinctions between the pair. For instance, Rell’s KDA ratio ([kills + assists] / deaths) of NaN is better than Sion’s ratio of NaN, highlighting that Rell may be more central to her team's team fighting capacity than Sion. This observation is in large part caused by the differences in assists.
Rell often has a slightly smaller longest kill spree than her enemy does. Commonly, she takes less damage than Sion. This commonly reflects different amounts of tankyness, but it can also indicate that the champion with higher HP has less mobility and thus is not able to kite away from additional harm when poked or engaged.
Both LoL champions are great. Both have their pros and cons. In League's current meta, Rell usually loses when trying to fight Sion, with a 47.1% win rate. Thus, Rell makes a poor counter to Sion.
While Rell does have a lower win rate than Sion, when on opposite teams, Rell also has a much lower level of difficulty that makes her a less complex character to pick up and master. You may get destroyed when picking Rell into Sion.
Additionally, Rell also has a very large amount of utility and CC, a similar amount to Sion. This often makes her just as valuable during team fights, especially when facing champions with a lot of burst damage.
While there isn't one best champion overall in League of Legends, in Rell 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 allies during teamfights.
Rell is a garbage counter to Sion. Make sure you focus your play on keeping up your gold and cs and taking out objectives. If you can do that, you should do very well as Rell against Sion.
If you would like to learn all of the intricacies of Rell in order to counter Sion during both the lane and mid / late game phases of League of Legends, you should continue reading to gather a few extra lessons on this matchup. If you mind the build and suggestions displayed above, you will grow your win rate by a lot and be closer to League of Legends pro players.
Rell on average accumulates a lot less CS as Sion. Champs who typically don't take many minion kills typically don't have to have much CS to be effective, such as sup champs. They are able to scale well off of their abilities and first items alone. Yet, champions with large amounts of CS, such as hyper-carries, usually require several high cost items to be effective. In either situation, try to do better than the values shown here to do well.
The most important items to focus on in your Rell versus Sion build consist of Zeke's Convergence, Locket of the Iron Solari, and Celestial Opposition. When Rell used at least these three pieces in her build, she performed significantly better against Sion than with many other common counter builds. In fact, Rell boasted an average winrate of 47.1% when countering Sion with this counter build.
To have the greatest chance of beating Sion as Rell, Rell players should use the Glacial Augment, Hextech Flashtraption, Minion Dematerializer, Cosmic Insight, Bone Plating, and Unflinching runes from the Inspiration and Resolve rune sets. Out of all the rune combinations players chose for Rell vs Sion counterpicks, this mix of runes yielded the best win rate. Notably, these runes gave a 47.1% win rate overall.
By default, tips, stats, and builds on how to beat Sion as Rell are displayed for all skill levels combined. If you would like to narrow the statistics and builds to a distinct skill level, you may use the selection menu earlier in the counter matchup guide.