Alas, I imagine a 9 isn't going to make the cut. If it matters I get infinite AoP's thanks to Tunnel Fighter, however I could also use my reaction to smack the kobold also thanks to Tunnel Fighter. But at the same time, I ought to save the reaction to beat the shit outta this masked dude. Ultimately, that's what Imma do: Hold the reaction so I can use it against this masked guy if he moves out of or within my threaten range.