Wilderness Survival

Wilderness Survival is a Ranger secondary attribute, meaning that any character with Ranger as their primary or secondary profession can put points into this attribute.

Guild Wars Description
"Many Ranger skills, especially rituals, preparations and traps, become more effective with higher Wilderness Survival."

General Description
Wilderness Survival has many different types of skills for damage, healing, defense, and other purposes. Wilderness survival has many preparations and traps, which make it popular for all secondary Rangers.

For example Apply Poison is a preparation which does not just apply to bow damage, Warriors & Assassins can take advantage of this too. Troll Unguent is a very low cost Heal over Time skill.

Other support skills include Dryder's Defenses, which is one of the few non-Expertise Ranger evasion stances. Storm Chaser gives the player energy each time they are hit by elemental attacks and boost their speed for a short period of time.

A lot of Nature Rituals are part of the Wilderness Skill line, these can advantage & disadvantage foes & party members alike, skills such as Equinox cause double exhaustion on skills which give a caster exhaustion.

The most useful application of Wilderness Survival as the players most prominent attribute are traps, these are predominantly offensive in that they cause conditions & AoE. Traps are especially effective in tight corridors where the party can lure enemies into them.