For five mana, this sorcery causes each non-vampire creature to get -X/-X until the end of the turn where X is equal to the number of vampires its caster controls
The more linear the strategy (i.e., the more it encourages you play a certain subset of cardsfor more on what this R&D vocabulary means, read this article), the easier this is
(Pokmon ex, Pokmon V have Rule Boxes.) You may attach any number of Pokmon Tools to your Pokmon during your turn
Though its true that any long-lasting hobby can end up being incredibly expensive, when it comes to Trading Card Games (or TCGs, for short), you can end up spending a small fortune on cards that may or may not end up being worth significantly more than you paid for them
For instance, if you have a card that reads 115/113, its a Secret Rare, Rainbow Rare, or Ultra Rare