It is a great way to enjoy opening packs without committing to a larger product like an Elite Trainer Box, Booster Box, or Booster Bundle, while still getting a themed and reusable storage item
Sticking to a life loss/gain theme can also push you into a vampire theme, since many vampires have similar life-draining effects
A common 1999 card in played condition is usually worth under a dollar , no matter the year on it
Festival sticks around permanently, however, with the trade-off that your spells damage you when you cast them
Don't forget to include Energy cards to power your Pokemon's attacks
Either way, its interesting speculative history, and the Topsun cards deserve a place in the conversation for the original Pokemon cards along with Bandai Carddass Series 1 and of course Base Set (which also has a good argument for the first cards to be manufactured, but again all we know is the release date of each set)