Try to stay away from walls. Ornn is much less strong if he cannot stun you.
Attack Ornn to keep him from creating items in lane.
The stat comparisons provided here underscore several significant Rell against Ornn counter stats that can help you distinguish the differences and similarities between the pair. For instance, Rell’s KDA ratio ([kills + assists] / deaths) of NaN is more than Ornn’s KDA ratio of NaN, demonstrating that Rell may be more central to her team's team fighting capacity than Ornn. This observation is in large part fueled by the differences in assists.
Rell usually has a slightly smaller longest kill spree than her enemy does. Commonly, she receives less damage than Ornn. This often reflects differing health capacities, yet it can also indicate that the champ with increased HP has less mobility and thus is unable to kite away from further harm when engaged or poked.
Both League of Legends champs are great. Both have their pros and cons. In League's current meta, Rell usually fairs equally well when taking on Ornn, with a 49.4% win rate. Therefore, Rell makes an ok counter for Ornn.
While Rell does have a lower win rate compared to Ornn, when facing one another, Rell also has a much lower learning curve that makes her a less challenging champion to learn. You still need to be cautious when picking Rell into Ornn.
Additionally, Rell has a great amount of CC and other utility, a similar amount to Ornn. This makes her just as valuable during team fights, especially when fighting champions with a lot of burst damage.
While there isn't one best champion in League of Legends, in Rell vs Ornn matchups, Ornn is the better champ with a similar win rate, less champion complexity, and a similar amount of utility to help out your team members during late stage team fights.
Rell is a somewhat poor counter to Ornn. Make sure you focus your actions on maximizing your gold and cs and destroying objectives. If you can do that, you should hold your own as Rell against Ornn.
To truly master Rell to counter Ornn during both the laning 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 shown above, you will grow your win rate significantly and be closer to League of Legends pro players.
Rell typically racks up a lot less CS compared to Ornn. Champions who typically don't get much CS often don't have to have much CS to be valuable teammates, such as sup champs. These kinds of champions are able to scale properly off of their skills, stats, and first items alone. Yet, champions with large amounts of CS, such as hyper-carries, usually require a lot of items to be effective. In either situation, try to surpass the numbers shown on this page to do well.
The best items to use in your Rell versus Ornn build consist of Zeke's Convergence, Locket of the Iron Solari, and Solstice Sleigh. When Rell incorporated at least these three pieces in her build, she performed much better against Ornn than with many other common item sets. In fact, Rell had an average win rate of 49.4% battling Ornn with this counter build.
To have the highest likelihood of beating Ornn as Rell, Rell players should use the Glacial Augment, Hextech Flashtraption, Biscuit Delivery, Cosmic Insight, Bone Plating, and Unflinching runes from the Inspiration and Resolve rune sets. Out of all the rune sets players picked for Rell vs Ornn counter picks, this set of runes resulted in the best win rate. Notably, these runes averaged a 49.4% winrate overall.
If you want to view Rell vs Ornn tips and counter builds for a an individual skill level, please select one from the selection menu provided above. If viewing for the first time, the statistics and strategies given are computed using every match completed with these champs.