I would recommend getting the singles, since both Mystery Booster sets are pretty expensive, while most playtest cards cost under a dollar
Altough Black Bolt and White Flare are separate sets intended to be complimentary, clearly Black Bolt is the favored pack of the two, partially explaining its slightly increased market price over the other pack
The stark contrast between the black background and the red and white logo creates a bold design
Its purpose is similar to Black Rose, but sometimes you need to play around Starlight Road or really need a synchro that can dodge Bottomless to get that fifth monster in the graveyard for Pot of Avarice
Straight from my earliest documentation, here's how I defined these pillars: Epic and Dramatic : No matter who the hero of the game is, every FINAL FANTASY story has world-shattering stakes
If you roll a 20, repeat this process