I don't think she should be casting Magi Curse.
I can't find any mention of her casting it before 2007-ish in any guide.
"Killing Vhal`Sera will net you a key-he's alot of fun to fight, IMHO and has a crazy spinning attack that needs to be seen to be appreciated." But no mention of it on the section for Tserrina. Only charm.
http://www.angelfire.com/freak/eqjon...discussion.htm
"Tserrina has gained a new ability called Magi Curse, which seems to be unresistable. It deals 100 damage and drains 100 mana every tick and always landed, even when I popped a Veteran reward and got 505 to each resist. " (Emphasis mine)
http://rising-dawn.azurewebsites.net...ious/ToFS.aspx
From Allakhazam thread:
"I used to kill Tserrina quite often on my druid a year or two ago with usually very little problem. I wanted her staff for an alt, so I decided to go up there again and encountered a rather deadly problem. "
"Tserrina has gained a new ability called Magi Curse, which seems to be unresistable. It deals 100 damage and drains 100 mana every tick and always landed, even when I popped a Veteran reward and got 505 to each resist." -2008
First mention of magi curse is in 2007.
http://everquest.allakhazam.com/db/npc.html?id=5604
And that's how I remember the fight with her too. She did vampcharm and cast necro spells, was resistant, and she summoned. But I don't recall an unresistable stun proc.