If Edge of Eternities is drawing inspiration from classic space operas and sci-fi, it could do a lot worse than taking notes from Dune . The real upside, though, is how they can play into other effects, including other effects on this list
Activate only once
If your opponent aims to interact, they'd need to commit before seeing the flipped card, and Scramble itself even has Retrace, in order to remain useful if countered or milled
Cards featuring popular characters, with strong visual impact, and where demand concentrates easily, tend to come out on top
It's a bit interesting because in Ice Age we've seen via Soldevi Simulacrum that they were able to create very humanoid-looking artifact creatures, so these things are probably walking around like T-1000s just for intimidation factor
Uncommon has two sides of the page, the triangle has three sides, the shell has four sides, and the pentagon five