Ordinarily, each tin will include one such card
If her sneak cost was paid this turn, instead return that card to the battlefield
But, mechanically speaking, its pretty good
Not only does this make it much harder to get scammed into buying fake cards (most of the fakes feel weird to the touch), but it also allows you to get a general feel for the collection
Yes, it features convenient top-side tabs, allowing you to easily open the case with a coin or fingernail without damaging the holder or your card
Hideous Taskmaster is another expensive creature with middling stats, but is one of the better Threaten effects, as giving the temporarily stolen creature annihilator 1 and trample can be quite a scary proposition