Like most Pokmon cards, the value of Meganium depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (HGSS Black Star Promos)
While previous Pokmon Pocket sets have deliberately nerfed some of the best cards in the game (like Professor Oak) for balance reasons, Rare Candy is coming over unchanged
Secret Rendezvous : Provides significant card draw for a very low mana cost, however, one of your opponents also gets to draw three cards
This drastically speeds up the clock for opponents, especially if you have these in play simultaneously
After the timeskip, he is somehow capable of making his cards levitate in the air while he reads them
Well, when in play, Neutralization Zone ensures that any players Pokmon, as long as they dont have a Rule Box (for the record, Pokmon ex or V do have Rule Boxes), cannot be damaged by attacks from their opponents Pokmon ex and Pokmon V