Just solo'd this mob as a lvl 70 druid. It took me two attempts. The first attempt she would get to 50% and start to complete heal, I would cast stun then nuke, but just kept missing the kill shot against the CH's. I egressed when she was at 8% >< because she ran me out of mana (only 7k mana though). I went back with two stuns loaded and didn't have to use either of them at all. She didn't even try to heal. My only guess is that her hitpoints come back much faster than her mana. Anyway, she dropped the Woven Kelp Waisteband and also .. Spell: Nature Walkers Behest (lvl 55 druid summon pet spell).
Alluring siren pops any place a deadly siren can spawn (just about any siren is a placeholder inside well). Was an even con to a 61 druid. Cleric mob too, which made the fight twice as long. Also drops:
Prismatic Jeweled Stud MAGIC ITEM LORE ITEM Slot: EAR AC: 5 STR: +3 STA: +3 WIS: +4 INT: +4 HP: +35 MANA: +45 Endurance: +45 SV DISEASE: +10 SV POISON: +10 Recommended level of 50. WT: 0.1 SIZE: SMALL Class: ALL Race: ALL Slot 1, type 7: empty