Sometimes cases go less than buying boxes individually, and sometimes they go for far more
If you need a defensive boost, Spirit of the Hunt or Ulrich's Kindred can watch over you
These colors also have excellent cheap tricks in Tifas Limit Break, Youre Not Alone, Blitzball Shot and Galufs Final Act, which work best when youre trying to dump your hand faster than the other player and end games early
Rarity also depends on the cards print run, condition, and demand within the collector community
These cards often feature fan-favorite mons with dynamic designs, so theyre worth having as a collector.
As long as you have switches in your hand, you could then keep cycling a single baby Palafin over multiple Finizens, "evolving" them all into Palafin ex