Jeez, that welcome back gift.

I got a Wolf Underling on a 180 character, so I feel like that's the lower bound, either that or 175+

I've got three more boxes, so I'm gonna try leveling those before opening them, but it's probably an exercise in futility, since there are 4 versions of the box, so perhaps I've already received the box for the range including 148, or 110, etc.

Though, one of them is a bishop I would like to have at 180, so, might as well.

I'm pretty happy with getting one at all, honestly, it makes up for the one that expired on me

Pretty sure the contents of the boxes are pre-determined at the time they decided to give them out. The email sent out will tell you already which box you get, so leveling should not impact your gift box contents.