Packs can have either 2 A cards followed by 1 B card, or 1 A card followed by 2 B cards
Sword of Truth and Justice is another one that is pretty good with Venser as the commander since it gives him (conditional) evasion, proliferates, and adds +1/+1 counters to grow your creatures which the deck has very few ways of doing, but I absolutely would not spend $30+ for the card, it's not that good
CL01_XR Land WU o1, ocT: Add W or U to your mana pool
We focus exclusively on high-value staples, cards that typically cost $7 or more on the secondary market
Include Dragons with death triggers or recursion, so sacrifices generate value beyond the initial damage
Mix all of that together, then add a sprinkling of the stock problems that publisher Ravensburger had with The First Chapter, where demand far exceeded supply for several months after release, and you have the perfect recipe for very valuable cards indeed