If you played the game back in the day, you might recall some of them, too
For returning a permanent, this can be used both offensively and defensively, keeping your important permanents safe or setting the opponent back on mana by making them cast it again
He should take care to keep at least some in reserve, though: his personal weakness, "Ruined Film", forces him to remove 4 evidences from his cards, and punishes with Horror for inability to do so, taking up to half of his Sanity supply in one hit at max power: failing to bring back proof may as well spell doom on him and his career
Each pack is guaranteed to include 2 foiled cards
making it the most expensive card sold of its kind
With those two cards on the field at the same time, you can mill your entire opponents deck