As soon as the equipped creature inflicts combat damage, one of the newly built mechanics of the Forgotten Realms-Edition triggers, the dice roll
They are the same 37 cards that you can find in non-foil in the summer Collector Booster and include cards such as The One Ring, Palantr of Orthanc, and Delighted Halfling
For some reason, this enchantment has both players picturing a river, then dividing defending and attacking creatures among the rivers two margins to make the process way more convoluted for everyone involved
BGS is well known for its detailed approach and, in many cases, subgrades (centring, corners, edges, surface)
Mirror of the Forebears [Dragon Deck]: Any artifact that can go into any tribal deck
Despite this, from my time with the Elite Trainer Box and other Black Bolt items, I didn't feel like the odds were increased at all for pulling those rarer cards