Killing Tentacles whenever possible will make it much easier to win a fight against Illaoi.
When your spirit gets pulled out, fight back if you can. Dealing damage to Illaoi reduces the spirit's duration.
Avoid grouping up for Leap of Faith to reduce the number of Tentacles available to Illaoi.
The stat comparisons shown here show some significant Briar versus Illaoi matchup stats that may help you figure out the differences between this pair of champs. For instance, Briar’s KDA ratio ([kills + assists] / deaths) of NaN is better than Illaoi’s ratio of NaN, indicating that Briar may be more central to their team's team fighting capability than Illaoi. This observation is largely a result of the difference in kills.
Briar normally has a slightly larger longest kill spree than their opponent does. Typically, they takes a similar amount of damage to Illaoi. This commonly reflects differing health capacities, yet it can also imply that the one champion has less agility and thus is not able to flee from additional harm when poked or engaged.
Both LoL champs are great champions. Both champs have their pros and cons. In the game's current meta, Briar usually wins when taking on Illaoi, with a 51.3% win rate. Thus, Briar makes a good counter to Illaoi.
While Briar does have a higher win rate than Illaoi, when they face off with one another, Briar also has a lower level of difficulty that makes them a less complex character to learn and master. You should be careful when picking Briar into Illaoi.
Moreover, Briar has some amount of CC and other utility, a similar amount to Illaoi. 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 Briar vs Illaoi matchups, Briar is the better champ with a higher win rate, less champion complexity, and a similar amount of utility to help out your team members during late stage team fights.
Briar is a decent counter for Illaoi. You will do well by focussing your play on increasing your gold income and taking out objectives. If you do that, you should be able to stand on your own as Briar against Illaoi.
If you would like to learn all of the intricacies of Briar to counter Illaoi during both the lane and mid / late game phases of League of Legends, you should keep reading to learn a few extra lessons on this matchup. If you listen to the build and stats presented above, you should grow your win rate significantly and be closer to League of Legends pro players.
Briar often racks up a lot less CS as Illaoi. Champs who typically don't get much CS usualy don't need much CS to be valuable teammates, 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, often have to have several high cost items to be effective. In either situation, try to do better than the numbers displayed here to do well.
The top items to prioritize in your Briar versus Illaoi build include Sterak's Gage, Black Cleaver, and Sundered Sky. When Briar used at least these three pieces in their build, they performed significantly better against Illaoi than with many other commonly used counter builds. In fact, Briar had an average win rate of 51.3% when playing against Illaoi with this counter build.
To have the highest likelihood of crushing Illaoi as Briar, Briar players should equip the Hail of Blades, Sudden Impact, Eyeball Collection, Treasure Hunter, Magical Footwear, and Cosmic Insight runes from the Domination and Inspiration rune sets. Of all the rune sets players chose for Briar vs Illaoi face-offs, this blending of runes resulted in the highest win rate. Notably, these runes gave a 51.3% winrate overall.
By default, tips, statistics, and builds on how to beat Illaoi as Briar are displayed for all skill levels combined. If you want to filter the stats and builds to a distinct division, you should use the selection menu located earlier on the page.