A set becomes very strong when: the manga card features a popular character the artwork is iconic Typical demand pattern: If a set has a weak manga rare, sealed demand often drops
This is usually reserved for baby Pokemon and, despite their size and lack of effort to set up, these babies can be menaces for any deck
It is nearly impossible to identify otherwise, especially with the low-quality photos you see on Japanese auction sites
To support this "discard haymakers, punch people in face" game plan, we're going to discard and buff Volrath with cards like Scavenged Brawler, recur our huge haymakers with Gix's Command, force our opponents to hand over our haymakers with Protection Racket, and oh yes maybe double kill opponents by casting Essence Harvest after pumping Volrath
Double that if Doubling Season is involved