riftbound proving grounds card list How Good Are These Exclusive Cards? Riftbound Origins: Proving Grounds Card

3 is a good number for this, I tried 4 and hated the bad hands Id occasionally got with this clogging it up, but 3 seemed to remedy that somewhat

Slashing Legends Tin [Zacian Ex] Pokemon Promo Keep track of your collection value over time

If you check the Offering Rates in Pocket, the probability of getting one of these cards is 0.040% in the fourth position of the pack

As mentioned above, the set introduced secret rare cards for other legendary Pokemon as well

Email them both

However, if the card had different artwork or a showcase treatment, it was treated like any other rare in the set (duplicate protection wouldn't apply until you had collected four copies of that version)