Winter's spell snapped into existence without any problems (even though it wasn't as potent as he might have wanted) - but his attempt at lying was far less successful. There was a look of irritation on both faces look at the Guardian, but it was Zack that spoke up. "Bullshit. And while we're at it - what are you doing here?" Hearing this confident rebuttal apparently brought some spirit back into the owner. "He's right, I don't think you have any authority to say that. Or be here, for that matter. Would you mind?"
If you want to lie convincingly or make a different attempt at manipulating anyone, please roll (Manipulation + Subterfuge) or (Manipulation + Persuasion).