I’ll try to get in contact with him again to ask, but I’m pretty sure that my Dracula said it’s something along the lines of “beautiful wives,” referring to Dracula’s brides. He didn’t even know the exact phrase, but management gave the explanation. I’ll get back to this!
Edit: the phrase is “ult ayum,” which is a command to go forth but particularly towards a group of women, ie. the brides.
Edit 2: this may not be the exact spelling, but this is roughly what it sounds like and what it means, as confirmed by the show directors.