I just happened to see someone shouting or yelling about <Naakuals><Lair reive><Foret De Hennetiel> <Fighting right now>. Bought the KI, went out to biouvac #4, and entered the ??? on the south beach. Suprisingly it's just another reive except you need a K.I. to enter and the Naakual is the Reive/Lair. By the looks of it, you will need a good alliance to get it started off. Everyone was running around killing all the many adds that keep respawning in the area and to generate the buffs and reive bonous'. The Naakual was kept in the far corner by a bunch of top teir tanks swapping out when one, two, or anyone within range of that one move dies.. A bunch of personal whm's to raise and cure, and most if not all of the Smn avatars (Ramuh) in the area acting as DD on it.
When I got there looked like it was @ 80% with 50% colonization in the area. Spent the next 3:36 hours fighting everything else in a random party that formed among other seeking players. I don't know how long the reive had been going before I got there. When I finished I had slowly regenerated about 34k in bayld or roughly 9k~10k an hour.. Someone who was there longer said they had already made about 20K. The cost might be offset slightly if you get in early enough. Just like any other reive the more people that show up the more sluggish things tend to get. I dont remember the total number of people in the zone but It was well over 80+. I dont think theres a limmit to how many people can enter but I heard theres a three hour timer between the last ToD and when the reive is active again. WIth that in mind, if you see 5, 8, or 24 people in the outer areas, then nothings probably happening. If you suddenly see 45, 60, 137 people showing up on area search. Then there's a good chance a Wildskeeper reive is going on.
Today I got in on the Morimar Basalt Fields reive for Achuka, after seeing 60 then 80 people there for an hour. Then after 1.5 hours to farm the remainaing cost of a KI, I saw 137 people in the area. Some were doing colony reives while everyone else was in the battle field. You just got to keep an hourly search in the areas or see a shout about one in progress. Ceizak Battlegrounds however is a hard ball as many people are using it to spam colony reives for the coalition and bayld.
The Naakuals do give a KI and a title after winning. They say there's seven of them, so might as well get them while theres enough people before the next set of missions and area expansions.