mtg card terms Keyword Guide Magic: The Gathering terms explained:

Reaching into the sky, the thorny vine sprouts threats of all kinds, from vineling monsters to leafy duplicates of various glimmers

This card is boring in that Boros got just another boring aggro Commander, but there are a lot of possibilities and if you had an Iroas or Jor Kadeen deck, this might be a better choice

Black Biotransference On the other side of the representation coin, black got the lions share with a dedicated deck and a place in all three others (though blue is in three of them, most of its representation is multicolor)

Foil cards only exist because someone figured out humans will pay more for shiny things