Over time, these Creature-types-matter cards have grown not only in number, but also in power level
Below is the generic information you'll find online
Most in-game effects not caused by Pokmon are distinctly damage counters placed rather than damage taken, such as Rainbow Energy and Confusion
Generally, these stickers will be a bit smaller than a real card and will often have a vibrant holo pattern that covers the entire surface of the card, like the pictured Dark Weezing
Check condition, seller reputation, authenticity signs, recent sold prices, and whether the card is raw or graded
Overworked I can imagine what one particular Konami employee was feeling like when they made this