Keeping tunnels spread out across the map will ensure you have choices when you want to cast Void Rush.
Cast Burrow before travelling around the map to take advantage of the increased Move Speed and the safety provided by Tremor Sense.
Tremor Sense can warn you of enemies closing in, and is particularly useful when entering enemy territory.
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 stats shown here highlight several important Rek'Sai against Ornn matchup statistics that may help us appreciate the differences between the pair. As an example, Rek'Sai’s KDA ratio ([kills + assists] / deaths) of NaN is better than Ornn’s KDA ratio of NaN, demonstrating that Rek'Sai may be more central to his team's team fighting capability than Ornn. This observation is in large part fueled by the difference in kills.
Rek'Sai usually has a much larger longest kill spree than his foe does. Typically, he takes a similar amount of damage to Ornn. This often reflects different amounts of tankyness; however, it can also illustrate that the champion with increased health has less agility and thus is not able to kite away from additional damage when engaged or poked.
Both LoL champions are great. Both have their strengths, weaknesses, and counters. In League's current meta, Rek'Sai usually fairs equally well when trying to fight Ornn, with a 49.5% win rate. As a result, Rek'Sai makes an ok counter for Ornn.
While Rek'Sai does have a lower win rate compared to Ornn, when they face off with one another, Rek'Sai also has a lower level of difficulty that makes him a less challenging champ to pick up and master. You still need to be cautious when picking Rek'Sai into Ornn.
Furthermore, Rek'Sai has some amount of utility and CC, a similar amount to Ornn. This makes her just as valuable during team fights, especially when trying to counter champions with a lot of burst damage.
While there isn't a single best champion overall in League of Legends, in Rek'Sai 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 allied champions during team fights.
Rek'Sai is a somewhat poor counter to Ornn. Focus your strategy on maximizing your gold income and clearing objectives. If you do that, you should do very well as Rek'Sai against Ornn.
If you would like to learn all of the intricacies of Rek'Sai to counter Ornn during both the early game and mid / late game phases of League of Legends, you should continue reading to gather a few extra tricks and insights into this matchup. If you listen to the build and stats presented here, you will increase your win rate by a lot and be closer to League of Legends pro players.
Rek'Sai typically accumulates a lot less CS relative to Ornn. Champs who typically don't take many minion kills often don't have to have much CS to be effective, such as supports. They are able to scale well off of their abilities and first items alone. Yet, champs with large amounts of CS, such as hyper-carries, typically have to have a lot of items to be effective. In either situation, try to surpass the numbers reported here to do well.
The most important items to focus on in your Rek'Sai versus Ornn build include Sterak's Gage, Black Cleaver, and Titanic Hydra. When Rek'Sai used at least these three items in his build, he performed a lot better against Ornn than with many other commonly used item sets. In fact, Rek'Sai had an average winrate of 49.5% when countering Ornn with these items in his kit.
To have the best chance of beating Ornn as Rek'Sai, Rek'Sai players should take the Conqueror, Triumph, Legend: Alacrity, Coup de Grace, Magical Footwear, and Cosmic Insight runes from the Precision and Inspiration rune sets. Out of all the rune combinations players used for Rek'Sai vs Ornn matchups, this sequence of runes resulted in the best win rate. Moreover, these runes gave a 49.5% win rate overall.
If you would like to view Rek'Sai x Ornn tips and builds for a an individual skill level, feel free to select one from the selection menu above. At first, the stats and guides shown are calculated using all rounds run with both champs.