So I have a whole bunch of inventions, 16 in total but one is different from the others. The Mana Vault is full foil, where as the others only have foiling around the borders of the card. The other oddity is that all the inventions have a bronze/orange theme to the card but the Mana Vault is more gold/yellow. Images linked below:
http://imgur.com/a/eyUuL
Why is Mana Vault different to the others?