For five mana, this Artifact lets you pay two mana and tap it to roll a dice, then you have to subtract the number of cards in your hand from the result, and if the result of that is 0, you have to discard your hand
If the spell has any targets, you may choose new targets for any of the copies." As the replicate triggered ability resolves, you'll copy Shattering Spree for each time you paid its replicate cost, even if the original spell is no longer on the stack at that time (perhaps because it was countered)
Of course, savvy players will know that you probably have cards like Netherborn Altar and Command Beacon to get around this issue, but this commander is still good for an initial laugh
I had no idea that the thin stamps were actually from a different source or print run
to Lorcana, and has a huge 207 cards in it