I know it's worse when players then get possessive about their dice and develop all kinds of rituals and superstitions. I have some news for you. Your "super special lucky die" is actually a loaded die due to inevitable manufacturing defects. You are not blessed by Gary Gygax's ghost, you are cheating at roleplaying. In fact, sometimes I think the "sometimes roll high, sometimes roll low" mechanics of yore are a blessing in disguise because they route around dice bias.
|The World Series of Dice is not having any of it.|
OK, so those last couple of 3D printed ones look cool. But leave them in the display case, wouldya? You're not doing yourself any favors, either; your most lightweight side is the 1 and that's going to constantly roll to the top. And everyone else, it's bad enough you bring your own dice but now I have to trust you to read them off from their 6 inch legibility range? And don't you know that special symbol is robbing your natural 20 of its game-galvanizing power, as everyone sits there going "Uh ... is that a 1 or a 20? Oh, a 20. Uh... cool."
Your dice can be pretty ... but first and foremost they're tools of the game. And everyone else at the table gots to be able to read them.