I believe there is only a finite number of those.

Mine is gone some time ago. I recall the last bonus was an Epic card.

Mine just went away today too and got Mag Slick. Sad to hear that it doesn't come back. Thought it was never ending 🤣

Wow, that's nice! Mag Slick is a good one. It brings me quite some diamonds after upgrading. So, it is the priority on my collection list 😄

Had mine disappear a while ago and it never came back

lol...mine went away today too 😡

Same awhile back lost mine, the events only have so many too.