Ghosts? [Spoiler maybe]

I've seen some ghosts from time to time in Ascalon and some other places...

I think they are named "Good Fortune Souls" or something like that... They don't move, They just stand there, doing nothing... After some time, they disapear... You can also kill them in a few blows....

What are those? What are their purpose?

Rangers set them down... they are spirits. The typically enhance or help your fighting somehow.

Ex: Spirit of Favorable Winds ... it increases damage and speed of your arrows.

When you go to the shiverpeaks, you'll see "Spirit of Winter" ghosts everywhere. When you are near one, you'll notice a hex on you (top left of the screen). Killing the spirit instantly removes the hex for everyone in your party.

As Eagle mentioned, Spirit of Favorable winds is probably the most common of these guys. Players can set them down, as can any of the enemy MOBs of the ranger type. They make arrows fly a surer path.

Thank you for the quick reply! ^_^

Just for reference, so folks don't get confused, which is common with spirits, these aren't hexes. These are enchantments, regardless of whether they're an enemy or friendly spirit. The majority of the spirits are "any creature" spirits, so they effect everyone in the radius with whatever attribute they carry. The centaurs in the Shiverbacks drop the spirit "Winter" quite often. This is a benefit to those centaurs since they have +cold resistances. The centaurs in Maguuma Jungle tend to drop Spirits of Symbiosis. These give +HP for each enchantment a character has on. In the Southern Shiverbacks, the Pinesouls drop Spirits of Muddy Terrain. These are one of the few that have effects for enemies only. They cause enemy movement to slow.

When I'm not fighting rangers, I drop a Spirit of Favorable Winds. But when I'm fighting rangers, because it helps them as well, I usually don't spin one up. It allows those ranger mobs to interrupt a lot more often due to the short flight time of the arrows.

Incidentally, I solo centaurs around the Maguuma Jungle area quite a lot. Since they drop level 8 Spirits of Symbiosis and since I usually have 6-7 buffs on when I am in battle with them, these spirits give me just over 1200 hitpoints while I'm fighting them.