Karina's mind went off the snake and fully onto the riddle. Harry Potter era indeed.... But it didn't make sense with some of the other things like Goblins Revolting. Karina certainly didn't remember any rebelling goblins from class. On top of all that, this was a person. Who ended in a beast? The Swede let her eyes roam over the compartment again, coming to a stop on the snake. Oh yeah. The snake was still here. She just continued thinking about the riddle semi-mindlessly until her brain caught the hint. The snake. Didn't Nagini the snake become Bathilda Bagshot? It would make sense, and she certainly fit the rest of the riddle. She wrote stories. The goblin wars, she ended as a snake, Harry Potter was saved by a girl of wit (Hermione Granger), it all fit! She turned to her partner excitedly. "Could it be Bathilds Bagshot?" she asked, her eyes lighting up until they found the snake again. History of Magic and Charms. They still had to get rid of the snake. She raised her already out wand higher and "Aresto Momentum!" shot a spell towards the enemy. That's a charm that would keep it still, no?