I was between two accounts and accidentally killed this NPC without even realizing it at the time. I waited it out as long as I could while at the keyboard and I got lucky enough to see the respawn time just as I was about to leave and call it quits.
[Tue Mar 18 13:52:50 2014] Eternal Spirit has been slain by Sistuma!
... About three hours go by until I find it up again ...
[Tue Mar 18 16:58:27 2014] You say, 'Hail, Eternal Spirit'
[Tue Mar 18 16:58:34 2014] Eternal Spirit beams and looks at you with pride. 'Greetings, shaman. I am both glad to see you and somewhat sad. I know you are here to retrieve my talisman -- which is the reason for my weeping heart. I do understand the importance of taking it for the Ruchu. My heart does warm, though, at the sight of a shaman in pursuit of great things. I am envious. Here, take the talisman and protect it with your life. I should like to see it again after all has been set right.' [Tue Mar 18 16:58:34 2014] You gain party experience!!
Just killed this guy,, He DOES spawn adds upon his death,,, 2 Soul harvesters, and 2 soul tamers afterwards, Sirran did not pop,, but the Eternal Spirit dropped 6 of the bird whistles.
I doubt you're meant to kill this mob, but note that if you do then soul harvesters and soul tamers spawn from it, like the other pegasi on the island.
Pulled it by mistake thinking it was a generic NPCs, didn't realize it was a named NPC until after I had assistance.
Corpse spawn? TRUE, I experienced the harvester / tamer splits. Bird Whistles? Yes, six of them, but on an 8min timer, NOT 30min. Sirran the Lunatic? No, kill the boss for that - Keeper of Souls. Cazic Touch? No, thank god. Keeper of Souls does, darn him.
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~ Muse Temperance the Elf ~ Lyricist of <Mystic Coercion> on Erollisi Marr ~ with a <Variety> of alts to keep me busy
on death, popped 2 soul harvesters, which in turn popped soul tamers upon their death.
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Pain Mistress Okami L`Assundre of Tarew Marr Dark Elf Shadow Knight Drinal (Tarew) Retired after 500 days /played Deleted http://eqplayers.station.sony.com/character_profile.vm?characterId=455266869792 Remade http://www.magelo.com/eq_view_profile.html?num=96950 Retired again
Seems highly unlikely, as this behavior was never seen in dozens (literally) of kills in PoSky. However, considering the buggy nature of Sky of late, I suppose anything is possible.