The three cards that are a must for most grass decks is the Venusaur family, the Meganium, and the Pokemon Center trainer. First of all the Venusaur family is a force you don't usually want to go against because of ENERGY TRANS, and second the high hp and attack power of him. Meganium lv.57 is a nice card just becuase of his WILD GROWTH pokemon power. Not to mention 4 energy do 40 damage and attomatic sleep that's pretty good and that's what makes it equal and/or better in certain not rare at all situations, because of WILD GROWTH you actually need two energy instead of one that is what makes me give it the best Pokemon Power Helps Attack Award of the Month. Now combine that with Venusaurs ENERGY TRANS and that makes it a whole lot easier to power up those high energy cost cards. This combo is so broken I called my local deck mechanic and he said, "There ain't a darn thing I can do with this pair, they are to broken to be fixed, sonnyboy." Everybody remembers the Venusuar/ Pokemon Center combo right? Well even if you don't have Venusuar the cheap energy cost with WILD GROWTH makes it no big deal to use Pokemon Center on a damaged pokemon with energy attached. Since you do have Venusaur with this three card combo what you do is you use WILD GROWTH, than use ENERGY TRANS to move energy around were they need to be right now and Pokemon Center the damage away and, BAM! You are ready to take on any deck. You can also use scoop up on basics than play again and same as above. Here is a good deck they work in.