The first category is commonly seen in vintage cubes
If you have ways to copy it, you can draw even more cards and have more deathtouchers on your side of the battlefield to make opponents feel uneasy at the idea of attacking you
Since Mono-Green decks generally take advantage of a lot of creatures, this allows you to constantly scry cards from your deck to ensure that your next draw will never be a bad one
While it isnt mandatory to play the color of your Character Booster, I expect almost all players to do so
Since Marshadow only has one Retreat cost, you can use an X Speed to retreat for free in order to give your Kangaskhan the Energy it needs to function
The frames for the miracle cards from the Avacyn Restored set, that had a special border that appears as if the art is bathed in light and the hybrid cards from the Ravnica, City of Guilds set are examples of different card frames that I would file in this category: The miracle card frame is beautiful, but the card wouldnt lose much without it