HI !
Im SUPERPENGUIN69420 and i'm not good at League, let's not hide it, i've been playing since August 2023 so a bit before Briar's release and i have been playing her ever since, im a jungler main and for now im like Silver so really bad at the game.
But still, i am proposing this page for you guys, who may need it. I have tested every possible build on Briar and these are my favourite ones.
Hope my elo won't stop you from testing the builds and guides, it's my first guide ever so i do not really know what to say.
BTW, i do not know at all how to code or anything, if i create more guides i may try to but im not really planning to.
PS:Im not english so sorry if there is some grammatical or lexical mistakes.

Head Rush (Q): ACTIVE: Briar Dash leaps to the target unit. If the target is an enemy, she deals magic damage, applies On-hit icon on-hit and on-attack effects, Stun icon stuns them for 0.85 seconds, and reduces their Armor penetration icon armor and Magic penetration icon magic resistance for 5 seconds.
Blood Frenzy (W): ACTIVE: Briar Dash dashes to the target location. If there is a nearby enemy upon her arrival, she gains Blood Frenzy for 5 seconds, during which she can cast Snack Attack Snack Attack.

Briar Blood Frenzy
BLOOD FRENZY: Briar breaks free from her pillory, causing her to become forced to basic attack the nearest enemy. She Reveal icon reveals the target and gains Ghost ghosting, Attack speed icon bonus attack speed and Movement speed icon bonus movement speed, as well as empowering her basic attacks to deal physical damage to enemies surrounding her target. This damage is affected by Critical strike icon critical strike modifiers.
Snack Attack (W): ACTIVE: Briar empowers her next basic attack within 5 seconds during Blood Frenzy Blood Frenzy to take a bite out of the target enemy, having an Relentless Force 2 uncancelable windup, gaining Range icon 50 bonus range, dealing bonus physical damage and Heal power icon healing her for 5% of her maximum health plus a percentage of the post-mitigation damage dealt.
Chilling Scream (E): ACTIVE: Briar Channeling icon charges for up to 1 second, during which she increases Chilling Scream's damage and range, and gains 35% damage reduction and Heal power icon heals herself every 0.25 seconds.

HEAL PER TICK:»
2.25 / 2.5 / 2.75 / 3 / 3.25% maximum health
Chilling Scream can be recast within the duration, and does so automatically afterwards. Chilling Scream's charge cannot be Silence icon interrupted by Stun icon crowd control.

RECAST: Briar unleashes a scream in the target direction that deals magic damage to enemies hit and Slow icon slows them by 80% for 0.5 seconds.
Certain Death (R): ACTIVE: Briar kicks her pillory's hemolith in the target direction, briefly granting Sight icon sight of its surroundings as it travels and marking the first enemy champion hit as her prey. The mark Silence icon disrupts their ongoing Channeling icon channels, and also True Sight icon reveals them until the effects of Certain Death are removed.

If a target is hit, Briar Remove Scurvy cleanses herself from all Stun icon crowd control and destroys her pillory over a cast time, afterwards Dash dashing to them with Unstoppable icon displacement immunity. Upon arrival, she creates an explosion around the marked target that deals magic damage to them and nearby enemies and Flee icon fears all non-marked targets for 1.5 seconds, during which they are Slow icon slowed by 35%. She then enters a state of Hematomania.