[VedalkenBear]

Hrm... I wasn't aware that Lugh was available to Tir? I thought he was just available to Eriu?

Regardless, The Baobhan is quite nice, but that high of a cost for an assassin kinda scares me. IIRC, she has few if any defenses, and so against certain nations (e.g., giants), the Lightning spam may not kill the giant before it reaches you, which would likely end in a dead Sidhe. Also, I don't think the Sidhe herself is Lightning-immune, and if she switches to the close-effect lightning area spell when any enemy gets next to her, she's literally gambling with her life.

So while I agree that she's a good assassin, I don't think that she's necessarily something that should be sent out in large numbers.