Hey fellow dragons masters, I have a question I just bought the piggy bank for 3.99 got my 120 gems but then it disappeared sooo will it come back and if it does do I have to buy it again?

The Piggy Bank is a random promotion. Once you have purchased the gems it will vanish and reset. It can be a few minutes to a few weeks before you see it again.

Once it reappears, it will begin to fill up again. If you want the gems, yes, you will have to purchase them again. It’s just a little sales gimmick.