Doomsday Excruciator Six black pips of mana makes Doomsday Excruciator pretty difficult to cast sometimes
Supposedly, real Magic cards shine under blacklight, while many fakes do not
They do tend to collect dust
If you win the clash when Marvo attacks, you can cast a spell for free from your hand
Any time someone questions ANYTHING, rather than owning mistakes and committing to get better as a group, people retreat to defensive positions and lash out, especially the bottom of the barrel people who are lucky to have jobs at all - the rejects from other companies that will actually take the well-below-market salaries WotC pays
With two colors, you'll be able to cast both colors of spells in most games (not all games, but what most players would consider "an acceptably high" portion of games)