A '''buff''' is generally a non-permanent attribute added to a unit, affecting it directly or indirectly for a period of time in a positive manner. Such an effect is the [[Barbarian]] [[Battle Cry]] ability to strengthen other characters. It applies to a single target, or targets in an [[Area of Effect]] but it retain this "buff" even when they move around.

The direct opposite of a buff is a [[debuff]], that works similarly, but has direct/indirect ''negative'' effects on the recipient.