#8 2002 1st Edition Shining Charizard from Neo Destiny The Neo Era Pokemon cards from 2002 are legendary, and this Neo Destiny Charizard is the perfect example
There are also more artifact synergies than enchantment synergies, especially in black
While the spell half of an MDFC might not be super efficient, drawing an MDFC for your turn is about a thousand times more satisfying and productive than drawing a random land is
It can also be reused with cards like Academy Ruins restocking it to your library, recursion from your graveyard, bouncing and then recasting it, or flickering it back onto the battlefield for another round of exiling death triggers
Because it is easy to get distorted if you line them up with the same sense as cards you normally search for, you want to consider them as a separate category
Skrelv, Defector Mite is the first Legendary Mite in the game, from the same set, and carries all the same text and stats, alongside another ability