It does. It's a lingering enchantment, something you power once and keep going until the spell is released.

[She's been studying a little bit of magical theory. Well, more than a little bit. Kael'thas Sunstrider, Prince of the Elves, had shown her a few tricks and Archer another. She had talent, why let it atrophy?]

It's different from what Mars does, but then...what I do without her is another story. I don't think the weather would heed my call though.