I have Jaheira as a Fighter 2 / Spore Druid 10. The temp HP gives her more staying power in melee while she combines Two-Weapon Fighting with a scimitar in one hand and a Flame Blade in the other. The undead she can produce helps bog enemies down so she's not eating all the melee hits herself. Action Surge also helps her set up Symbiotic Entity in the first round so you can pop it and go in immediately.
