Oh, it's his birthday... Good question. I'll think about it, and if I have enough money, you can cover it, okay?
"Dear Teacher Vergil! It's been quite a few years since you've been with us, and every day of that time feels like a celebration to me! You have become a treasure trove of wisdom for all of Baldur, and legends are told about your past deeds! Today, you have turned another page in your personal history and chronicle, but I believe that even more lies ahead! May Mother Arteria, who favors you, protect you.
With love Sincerely grateful and with best wishes, health, and happiness, your student, Gulveig."
Regarding the last "with love," Vegi was quite afraid that it would be too obvious, so those words didn't make it into the final version of the card. Which the girl later regretted, of course.