Keep it simple. 1 every 3-4 cases is: 2125/~3.5 = ~607 total CFs. So there’s realistically 275 - 325 of each Cold Foil cards. That’s pretty rare considering there’s 2125 redemption cards. Roughly 1:336 chances per pack to pull a CF, wow! Thanks for the info Jupityr!
Well, the redemption codes are a different animal and not meant to be "rare" in the way that certain chase cards are, but I take your point.
Seeing some posts on Reddit about cardsmiths - GameStop has helped get the word out IMO
only 5 boxes at gamestop atm