The combination of Sorin, Imperious Bloodlord and Vein Ripper is difficult to overcome for many decks
They were silver border only because the set was silver border, not because they couldn't work in black border
For example, you might go for Countersquall over the usual Counterspell, or Lim-Dl's Vault as an alternative to the usual Demonic Tutor
Its rarity is bolstered by the unique promotional nature and distribution method, which required collectors to engage actively with the product at the time, leading to fewer surviving examples in mint condition
Fortunately, since its a Pokmon SP, you can just use Pok Turn to remove it from the Active Spot instead of having to manually retreat it or use Warp Energy
These are used on things like Fire Magic and are both a mechanical and flavour winner