Because the first print run of the Japanese Base Set (October 1996) was produced before the rarity system was finalized
Many builds of the Amethyst/Emerald Lever Tempo deck are some of Disney Lorcanas most affordable tournament strategies, which has created a high demand for all of the decks newest additions, with Wrong Lever
This is just with vanilla creatures that don't have any other effects
One of the defining moments of the Weatherlight Saga (the name given to the initial overarching Magic storyline from Weatherlight up until the conclusion in Apocalypse ), is Barrin nuking Tolaria, the center of Urza's magical school and plot to stop Phyrexia, following the death of his family
Ill confess, though, that the thing which really sparked my interest in it was the printing of Aetherling, and especially the way it combines with Cavern of Souls
Technically it can be taken out in a single blow via Lillies Clefairy ex, for example