Before we begin, we should clarify that we are specifically examining cards for the 99 of a deck, rather than new options for a deck's commander
There may be a way to go with a creature-oriented mill deck using Phenax, God of Deception, but playing a bunch of creatures kind of defeats the purpose of trying to kill the opponent through other means, as you are turning back on all the removal you were trying to blank
Second, theres no reason the buyer would want to spend more on your graded card when they can get a normal-valued copy through just about any online marketplace
Each color offers distinct tools
And then theres the shadowy legion of the damned haunting the space (or wallpaper?) behind the table
Without Arena, I wouldn't have been able to do that