Does it change the value of your big creatures like Arbor Colossus
4 Blast From The Past Combining all the older seasons of Doctor Who into a single deck is a tall order, given the shows 60+ year history, not to mention books, comics, and other works that featured these characters, but the Blast From the Past deck does so extremely well
The former is a value piece, while the latter feels like it needs the right shell, such as Mairsil, the Pretender
[1] In all instances, the cards had perfect grading scores
It has no direct benefit in battle, and using it will cost you your sole support skill slot so you can't use the other much more interesting and battle-useful support skills, but using this skill will allow you to get your job levels up, access the more advanced jobs, and learn high cost skills so much faster