Primary attribute

From GuildWiki

A Primary attribute in an attribute of a character profession that can only be utilized if the profession is the primary profession of that character. Each primary attribute enhances the core abilities of its profession. A warrior with more Strength will deal more damage while a monk with more Divine Favor will heal better.

Each profession in the game has multiple attributes, but only one primary attribute. You can only use the primary attribute of your primary profession. The primary attribute of your secondary profession will not be accessible (except at rank 1 from the appropriate blessing). For this reason it is an important consideration when deciding what your primary profession will be. The primary attribute for each class is listed below.

Profession	Primary Attribute	Inherent Effect
Warrior	Strength	Attack skills gain 1% armor penetration per rank.
Ranger	Expertise	Reduces Energy cost of Attack skills, Rituals, touch skills and all Ranger skills by 4% per rank.
Monk	Divine Favor	Monk spells that target an ally heal the primary target for an additional 3.2 Health per rank, rounded down.
Necromancer	Soul Reaping	Gain 1 Energy per rank when a non-spirit creature dies within range (About half Compass Range); this effect can happen a maximum of 3 times every 15 seconds. Energy gain when at full energy does not count toward the limit.
Mesmer	Fast Casting	Divides casting time of spells by 2(attribute/15) (or multiplies casting time by roughly 0.955(attribute)). Each rank also decreases the activation time of your Signets by 3%.
Elementalist	Energy Storage	Increases maximum Energy by 3 per rank.
Assassin	Critical Strikes	Increases critical hit rate by 1% per rank. For each critical hit inflicted, 1 Energy is gained at ranks 3-7, 2 Energy is gained at ranks 8-12 and 3 Energy is gained at ranks 13 and above.
Ritualist	Spawning Power	Increases the Health of summoned Spirits and animated Minions by 4% per rank. Also increases the duration of your Weapon Spells by 2% per rank.
Paragon	Leadership	Gain 1 Energy for each ally affected by your Shouts and Chants, up to a maximum of 1 energy per 2 ranks.
Dervish	Mysticism	Whenever an enchantment on you ends, you gain 1 Health per rank and 1 Energy per 3 ranks.