[vsp]

To-hit likelihood, yes, but its defenses may be too high. A hit that does no damage reads the same as a miss.

Try something that'll lower monster resistance, such as Wussiness potions. Disco Face Stab is awesome in that respect; I kept that instead of Mad Looting Skillz when I migrated to TT from DB, and haven't regretted that at all.

If worst comes to worst, try boosting Moxie to keep yourself in the fight and bring an attack familiar, who can sometimes hit when you can't.