I do strongly believe that Zirconis' magic has a different side to it and Mashima extenuated the dignity part of it and used it for fanservice. Maybe it'll be a magic that would emotionally and mentally harm Wendy ;o and take away her Dignity as a Dragon Slayer.
Who knows what else this magic can "strip" from a person
5/5 this chapters hands down everything is awesome! And i do believe that zirconis can be converted to be *a good dragon* since he didnt kill anyone just strip them. Which is actually really good tactic. If you can take the last few wars that happened IRL they dont fight to kill they fight to wound the enemy so they can retreat. Thats the concept of Zirconis power. Strip them unable to use magic due to be embarrassed rathen than stand your ground take everything he throws and supporting the dragon slayers.
