FM Named Cycle

[Videri]

I haven't done the Frontier Mountains named cycle, but I think the way it works is, if you want those Sarnaks to spawn, you have to kill all of the mobs on its cycle. The entire list of mobs on Cycle Two will take turns spawning when any one of them is killed.

Cycle Two

Spot One (Brute) mobs and drops SE
a berserk brute (Glowing Club)
a gorging brute
a diseased brute (Rotwood Club)
a mangy brute
a rabid brute
Boogoog (Mosscovered Twig and later Mosscovered Branch)

Spot Two (Misc.) mobs and drops SW
a goblin coward
a goblin scavenger
a mountain giant hillock
a Sarnak bloodbinder (Slime filled potion)
a sarnak rebel (Necklace of Defiance)
burynai squad leader (Shovel , Rusty Mining Pick)
Joojooga (Gauntlets of Brute Strength)
Miner Bordakn (Skullchip Bracelet)

Spot Three (Sarnak) mobs and drops NW
a sarnak assassin (Windruned Dagger)
a sarnak dragoon
a sarnak mystic
a sarnak rebel
a sarnak scavenger (Skull-topped Runestaff)
a sarnak seer
a sarnak warlord (Ring of Dominance)
Bloodscale the Vicious (Blood Splattered Veil)
Clazxiss (Windetched Staff)
Draketamer (Barbed Scale Whip and later Scale Hide Whip)
Slithinis (Slithinis's Shield)
Varithyx (Sleeves of the Ancients)

I don't know if it goes from Spot One to Spot Two to Spot Three back to Spot One. It might be in a predictable cycle like that, or it might be random within the same list of mobs.

Perhaps someone with experience farming it, or someone with insider dev knowledge, can elucidate.