I am 100% rare and mythic complete on OTJ, with MANY Big Score cards left to get. However, when I buy mythic packs (spending even MORE gems to buy 4 MORE packs as shown in an attached screenshot) I almost always get a pittance of gems in return instead of any of the multiple Big Score mythics that I still don't own. Is this intended? If so, that's absolutely miserable - if not, it really needs to get fixed, I cant imagine the sheer number of gems wasted due to this.