"Wolfsbane potion?" Sam asked, wondering if they might actually be talking about some kind of dungeons and dragon thing. Maybe she didn't mean actual werewolves, just the fictional kind. That would actually explain a lot about why he didn't understand most of what she was talking about. Still, the earnestness in which she said everything made Sam doubt this was the entire truth.
Sam saw Luna approaching from behind and tried to call out to her to tell her to hit the wolf with a large stick or something, but before he could get anything out she'd covered the wolf's eyes with mud. The wolf turned blindly towards her, releasing Sam's arm and snapping in her direction, though Sam was relieved to see that Luna had gotten out of the way fast enough.
The wolf started shaking it's head in an effort to get the mud out of it's eyes, and Sam used the distraction to kick it hard with as much momentum as he could manage from his spot on the floor. He scrambled to his feet, knowing that the first wolf would be returning at any moment, he moved towards the tree, calling over his shoulder at Luna. "Find a weapon. A stick, anything. Hit them hard in the face." He grunted as he reached up for the knife, trying to work it out of the tree. "Ears, nose, eyes!" He called out into the bark of the tree as his arm worked to get it loose.