The reds and yellows used to loosely define the piece match the usual Mountain colour scheme, while also providing a strong contrast with the dark, empty background
If the planeswalker paid a visit to your opponent and returned to your control within a turn, the activation limit still counts: no more than one per turn
Now, one-by-one, those cards are finally being revealed
Rather than cards that do nothing due to being expensive and then requiring further conditions to be met to enact their effect thus ultimately doing nothing, the cube do nothings are low resource cost cards that have incredibly minor, often negligible effects
So, if anyone ever stumbled on a copy of the Mind Seize precon deck, the correct thing to do was buy it, sell the True-Name Nemesis, make a profit, and keep the rest of your cards for yourself