These upgrades provide more tokens, more mana, more value, and more consistency
[D] Severe Poison Your opponent's Active Pokmon is now Poisoned
For those unfamiliar, the term aggro is short for aggressive, and in this case, refers to a strategy that seeks to put lots of low-cost cards into play and gain enough of an advantage to win before the opponent can stabilize
For individual cards and older booster packs and boxes, you will just have to gain a lot of experience and learn the nuances of real Pokemon products and then make educated purchases, ideally with a means of recourse if it turns out you were scammed (some kind of buyer protection program, etc)
This is a strong card for three to five-color decks as it is a low-cost way to use your creatures to easily fix your mana while giving you a source of ramp
Awarded to the first-place winners of the earliest official Pokmon tournaments