Because Pokmon Center ETBs are sold directly through Pokmon Center and are usually produced in smaller quantities than regular retail ETBs, collectors often see them as premium sealed products
Remember that you can play even mana-valued cards if Obosh is your commander, its just that youll want the majority of your creatures and cards that deal damage to be odd mana-valued
So, without further ado, here is my take on Palkia & Dialga Legend
Old Gnawbone, Kokusho, the Evening Star, and Galazeth Prismari are examples of commanders that happen to be dragons but arent great dragon commanders since they have no inherent synergy with other dragons
The Ram is a nice 0/5 for two mana that can swing and will gain you a smattering of life each turn and that's a nice bonus
With Ns Plot , you can move up to 2 Energy from your Benched Pokmon to your Active Pokmon