This could mean focusing on a specific type of Pokemon, such as Fire, Water, or Electric, or even building around a specific, powerful card, like a VMAX or GX Pokemon
Dash affords some of the perks of haste and some more unique to it but it isn't so potent a mechanic at baseline that you need to pay for it as it were
There was also the Pikachu card from the Sample Set
Neo Destiny featured three different prefixes for Pokemon, which included valuable Light Pokemon and Shining Pokemon, along with a third, sinister option: Dark Pokemon
Giving a creature protection from a color will also remove all Auras and Equipment on it if they have that color in its identity, so be careful when giving a creature protection from specific colors
That means you will often be taking damage from their attacks rather than bouncing/Last Gasping before damage so as to keep your pricey Negate up