If you pick up a couple of UR/UB duals and a World Map, you could use those to splash the powerful Shantotto, Tactician Magician, which plays incredibly well with those spells
Not background necessarily, but some other line of text that says something along the lines of Whenever you sacrifice a Treasure token, give a creature a +1/+1 counter and trample until end of turn. That would make it a lot more interesting and powerful, but I suppose not every card needs to be great
Each of its owners final moments is remembered within the roiling stone
Apparently there is another fake printer group out there
The bottom line is that you wont want all your card draw in only one of the colors in a typical multicolor EDH deck, so finding a few red draw staples helps make your decks more consistent
A 5/5 for one mana of each color, Sliver Hivelord gives you an indestructible army of Slivers