Practice Field: Advanced Level Missing Sign To Kill Master Dummy
Posted by Voruna
Master Dummy is one of the old, weird anti-bot mobs like Rurumo and the Ice Witch, so if he attacks you at all, you get teleported away. Theres meant to be a sign on the map to kill them/stop from teleporting you, although for Master Dummy in particular i believe it was specifically kill as it's HP is excessive at 15,375,000.