"It is not the first time this tavernkeeper has toyed with new arrivals." Don't mind him shooting a murderous look at the barkeep. One day, Tavernkeeper, he will purge your sorcerous ways.

"At what point would you become concerned?" He's no fan of sorcery, and while he knows a bit, it is from an outsider's perspective. The newcomer looked like he knew more about it (the pointy ears are a clue he has learned is nigh infallible.)