One issue that will always stand is Mana. It has always been a huge problem in Magic, and has become less of a problem with Duel Masters. Seeing as every card can be used for mana, there will never be a time where you could not make more mana. But wouldnt it be great to have just have a little bit more mana, which may hand you the game? All possible with the wonderful Nature cards. Coiling Vines, Bronze-Arm Trbe, Ultimate Force, Pangaea's Song, and Poisonous mushroom are all cards that increase your mana. Now i know it may sound almost pointless but it will not when your opponent accelrates his mana so he can summon his Zagaan, Knight of Darkness on turn 3 or 4, and your still trying to get enough mana to summon a decent blocker. Following this will come his Vampire Sliphy's and Deathlinger's to take you down very fast. So yay for mana acceleration, use it, use it well.