If a creature an opponent controls would die, instead exile it and put a number of +1/+1 counters equal to that creature's power on Ravenous Slime
The booster packs are all completely sealed
Move your right hand with the deck diagonally forward and to the right
It pays to have a friend or two with alternate versions of the game, who are willing to trade with you (not to mention some Pokmon, like Graveler, will only evolve when traded)
However, if you only need one mana each activation, things will get out of hand in a hurry
Of course, be skeptical when purchasing cards from unknown sellers read reviews, verify company information such as contact info and when they were established, and whether they are involved in the TCG community