INCREASING ATTRIBUTES (BUFFS) - Lusternia Online Help

4.2.1 INCREASING ATTRIBUTES (BUFFS)

There are many abilities, spells and skills that help you increase your 
attributes (strength, intelligence, etc.). These are known as "buffs". 
Buffs are not calculated in a 1:1 manner, but rather are a weight that 
is used to calculate the attributes. (This includes divine favours.)

    Attribute Increase / Buff Weight Needed
         +1                 1
         +2                 2-3
         +3                 4-5
         +4                 6-7 
         +5                 8+

NOTE: The exception is SIZE, where the increases are calculated 1:1.

See also: HELP DMP (for damage modifiers)