This helps you in the long run, as when an opponent uses a spell or ability casts using mana from a Treasure, you put a +1/+1 counter on any creature and draw a card
Bygone Marvels is cool I suppose, but the decks not dying for a Regrowth effect, nor is explore that good at putting permanents in the graveyard for descend 8 to be consistently online
It also massively improves your first combat by giving your creatures first strike and untapping them, which allows for much safer and potent aggressive plays
Every reprint has repurposed art to match its respective story, and each deck tries to capture certain iconic events, characters, villains, etc
From its passive ability that makes it an insect creature while not on the battlefield, to its literal -5 bomb which deals damage based on the number of cards in your graveyard