Some might be revived when new sets revisit the same plane or theme, or appear in supplemental products which arent limited to a narrow mechanical palette
However, if some of the cards featured in these starter decks look familiar, its probably because both packages include a few previously-released cards from The First Chapter and Rise of the Floodborn
On the subject of Aetherworks Marvel, Manglehorn is pretty awesome
Each Droid has the ability to Repair after death, which in a few turns lets you cast it again, and again
In 1993, Richard Garfield changed games forever
Grenzo, Havoc Raiser Grenzo, Havoc Raiser is a neat commander that can force a lot of chaos if you can connect with small creatures