You get a temporary creature, sort of like Fading, if you are old enough to remember that mechanic, except these tick up with lore counters and get additional effects
Example: Bennie Bracks, Zoologist is great as a card draw, but you need to create a token to do so, and not every deck creates tokens consistently
Archmage Emeritus is the best friend of any Spellslinger player, turning every cantrip into a one-mana draw two, and every other spell into a cantrip
It just got banned out of another format
When magic first started, Wizards was a far smaller company and pulled ideas for sets from history or, in the case of Arabian Nights, a book (One Thousand and One Nights), which gave way to cards like Ali Baba