This means Japanese collectors often chase event promos and limited cards as part of their culture of collecting, whereas English collectors might focus more on set completion and high grades
Time of Need Tutors are heavily used in Commander, so while this one is limited it still does the trick for a lot of good options
There are almost no cards that fit the last sentence of the effect, and Staro is the most commonly used card
Enhance Value A professional grading of a card can increase the market value of your item
add 1 "Virtual World" monster from your Deck to your hand, then send 1 card from your hand to the GY
We've seen this card being used by other characters like Gozaburo (another Exodia user) in DM as well as Chazz in GX, so we know it's available, however since there's no evidence of Adrian actually using it, it's inclusion is a topic worthy of debate (with my 5 other personalities cuz no one else gives a shit lol)