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 some vital Briar versus Ornn counter stats that can help us appreciate the differences and similarities between the two. For instance, Briar’s KDA ratio ([kills + assists] / deaths) of NaN is better than Ornn’s ratio of NaN, showing that Briar may be more central to their team's team fighting effectiveness than Ornn. This observation is largely a result of the differences in killsdeaths.
Briar usually has a much larger longest killing spree than their enemy does. Typically, they receives a similar amount of damage to Ornn. This often reflects different amounts of tankyness; however, it can also indicate that the champion with higher HP has less agility and thus is not able to escape further harm when poked or engaged.
Both League of Legends champs are great. Both champs have their strengths, weaknesses, and counters. In League's current meta, Briar usually fairs equally well when playing against Ornn, with a 49.9% win rate. Therefore, Briar makes an ok counter to Ornn.
While Briar does have a lower win rate than Ornn, when facing one another, Briar also has a lower difficulty level that makes them a less complex champion to develop with. You should be careful when picking Briar into Ornn.
Additionally, Briar has some amount of CC and other utility, 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 is not a single best champion for every situation in League of Legends, in Briar 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 late stage team fights.
Briar is a somewhat poor counter to Ornn. You will do well by focussing your play on maximizing your CS and destroying objectives. If you are able to do that, you should do very well as Briar against Ornn.
To learn all of the intricacies of Briar in order to counter Ornn during both the laning and mid / late game phases of League of Legends, you should keep reading to learn a few extra tips and tricks for this matchup. If you listen to the build and tips presented above, you will increase your win rate significantly and be that much closer to League of Legends pro players.
Briar typically accumulates a lot less CS relative to Ornn. Champions who typically don't take many minion kills usualy don't require much CS to be valuable teammates, such as supports. They are able to scale properly off of their skills, stats, and first items alone. Yet, champs with a lot of CS, such as hyper-carries, often need many items to be effective. In either case, try to do better than the numbers reported here to do well.
The most important items to have in your Briar versus Ornn build include Sterak's Gage, Black Cleaver, and Sundered Sky. When Briar incorporated at least these three pieces in their build, they did much better countering Ornn than with most other common builds. In fact, Briar had an average winrate of 49.9% battling Ornn with this build.
To have the highest likelihood of coming out on top against Ornn as Briar, Briar players should equip the Hail of Blades, Sudden Impact, Eyeball Collection, Treasure Hunter, Cosmic Insight, and Magical Footwear runes from the Domination and Inspiration rune sets. Of all the rune combinations players chose for Briar vs Ornn battles, this mix of runes yielded the greatest win rate. Notably, these runes provided a 49.9% winrate overall.
By default, tips, stats, and builds on how to beat Ornn as Briar are shown for all ranked divisions combined. If you would like to narrow the stats and builds to an individual division, you should use the selection menu located earlier on the page.