Brush is a common map feature found on the Fields of Justice that obscures vision from outside observers.
Upon entering any brush, a unit's model takes on a partially transparent quality, and enemies outside of that brush will immediately lose sight of the unit. Units that enter a patch of brush are not stealthed. A unit inside a brush can be revealed by an enemy sight-granting ability, item, or unit, or by engaging in an attack that reveals the unit.
Brush does not provide true stealth, as the unit does not require any form of true sight in order to be visible, but the widespread distribution of brush around the various maps nonetheless mean that using brush correctly is a nigh-universal skill to learn in high levels of League of Legends play.
Patches of brush that are connected usingwill act as one brush patch.
The unique properties of brush and its ability to manipulate the sight of an opponent offers several key tactical advantages. Most notably, any kind of unit-targeted ability, including basic attacks, cannot be used on an opponent hidden within brush whatsoever, meaning that brush can be used to force enemy champions who rely predominantly on this casting type (such as ) to waste resources or time on reacquiring sight of their target. It is also a key factor in almost any kind of ambush or gank, allowing an aggressor to approach their target while remaining hidden.
All forms of basic attacks and the majority of non-skillshot offensive abilities will reveal the caster and most of the area around them for about five seconds, if they are standing in brush. It is therefore generally impossible to remain permanently stealthed while attacking, although the element of surprise granted by brush can still be significant.
- ARAM maps. is currently the only champion who can create brush, being able to do so via . He can creates a line of brushes, blocking the sight of the enemy. This technique can be used during taking monster objectives or in
- A technique known as juking is commonly employed using brush to invoke unpredictable changes in direction when fleeing, and the same unpredictability can also allow for disguising a vulnerable channel time, such as or .
While the most direct way of scouting a suspicious brush involves the user personally entering to inspect it (more commonly known as facechecking) almost all abilities, spells and items that provide sight can be used to reveal the interior of a brush. Most prominently, wards are a very common answer to tactical attempts to utilize brush. Wards are subject to the same limitations surrounding brush as other units; they will reveal the area inside the brush, as well as the area surrounding it, and a placed outside of a brush will not be able to see enemies inside. Because of these reasons, it is extremely common to place a ward within a brush and effectively negate its use by the opposing team for as long as the ward lasts.
- If the champion is capable of summoning pets or possesses one that is controllable, they can also be ordered into the brush to scout.
- Aside from gaining sight, brushes can also be scouted indirectly using certain abilities.
- Making a noticeable sound, such as or .
- Granting or expending an effect if the spell hit such as 's movespeed or granting a stack.
- Most collision skillshots will visibly stop short if they collide with a unit, such as or .
- Proximity-targeted abilities that cannot be used unless an enemy champion is in range can also indicate if a bush is occupied provided the user is close enough. Examples such as .
- Effects if the champion is not seen by enemy champions. Examples: and .
- Drawing aggro from nearby [[Minion (League of Legends)| minions]] or pets, such as .