I think there is a bias surrounding any cards perceived to be OP that they are the reason the result went that way when loads of "weaker" cards would have done the same thing or even completely different cards used earlier in the game already decided it
We do not factor unsold items into our prices
Kamigawa: Neon Dynasty was pretty neat, as were the precons from Streets of New Capenna
A bit of life and a nice cheap little defensive body which does a lot of work against aggressive red openings and can often be the difference between a win and a loss
Borderless surreal space cards can be found in both Play Boosters and Collector Boosters in non-foil and traditional foil
After the Scars of Mirrodin block introduced metalcraft, another artifact-related mechanic, the affinity decks started to add metalcraft cards like Mox Opal, Carapace Forger, Etched Champion, and Galvanic Blast