Buffy the Vampire Slayer: Wolves at the Gate Season 8, v. 3

Vampires that, at will, can transform into wolves, panthers, insects, or fog invade the Slayer base of operations in northern Scotland, and not only walk away unscathed, but in possession of Buffy's scythe, the symbol of Slayer power worldwide. Buffy and the Slayer-legion travel to Tokyo in order to learn more about their dangerous new foes, as Xander journeys to Transylvania to solicit the only person they've ever known to possess such power - Dracula!