The set was playing with tropes from Japanese pop culture, and Vehicles were a perfect fit for the mechs, robots, and high-tech inventions of the plane
Creatures you control of the chosen type get +2/+2
For example, Kwain, Itinerant Meddler has an activated ability that lets you 'pay the cost' of tapping it
Metal tends to be one of the weakest types overall in the TCG, thanks to Weaknesses to more popular Energy types and a selection of Pokemon thats variable in quality at best
A wishlist is being added so you can indicate which cards you want to trade for with purely online friends
Card not found is a rare, which didnt see much play, but Card not found was a format defining card for a while, even if you couldnt necessarily use the Spell Mastery