Journey into Nyx I cant name four cards from this set, but people I trust tell me it was lame
Members of communities also easily find trading partners in the community, with specialized trade finder tools
If you buff Agatha of the Vile Cauldron enough, you can take advantage of abilities that you might not otherwise see as viable due to how expensive they are normally
Interestingly, two quiet cards from the Time Spiral era were called out, but they're explained well: slow to start, but quick to take off if they pal around together
And at this point there are so many different ones available that you have a world of characters to choose from
A mana base can be simple (say, seventeen Plains in a mono-white Limited deck) or it can be quite complex: featuring multiple colors of mana, lands with unusual abilities, and indirect methods of making mana (via artifacts, creatures, or spells)