(Sacrifice, discard, draw)
Kozilek Colorless Voltron Sorry, Zhulodok, Void Gorger, but you weren't the best commander in your own deck, for the true Colorless King remains Kozilek, the Great Distortion
The basic idea is that a flashlight on full blast will cut through a legit card and show through on the other side, while a counterfeit card will either block the light completely or dull it significantly
These references aren't totally obscure, but I also picked ones that aren't such popular knowledge that even people who haven't played the games probably know about them, like Sephiroth killing Aerith
The -3 is really good because permanent can mean many types of cards
In the end, the pros and cons of these extra, unusable cards are such that either one could be argued as better than the other by anyone who likes them