... So, a less potent version of Parallel Universe?
Not necessarily, its only less potent when used on a creature in play.
However, since you can target cards in your hand, you could duplicate immaterial creatures, spells, and permanents.
This could be very interesting in a deck that uses SoSe... essentially, the shard spawns the cards and you pick the ones you need most to replicate.
It is also interesting because it can effectively extend the number of copies of a card to 12. This could, for instance, bring back bolt-kill decks outside of the fire element.
My only critique is that I think the upgraded version should be allowed to target either upgraded or unupgraded, and not be restricted to only upgraded cards.