This means a couple of important things
Scrapheap Scrounger gives aggressive decks a great way to apply a long-term stream of pressure on controlling opponents that are trying to win the game by killing everything
Tech Savvy Beyond Equipment and Equipment synergies, the Final Fantasy VII Commander deck also packs a number of more general artifact synergy pieces
Though it hasnt been explained in detail by Wizards of the Coast, it seems fairly obvious that their licensing deal with Marvel/Disney only covers them for printing a set physically, and not using the comic book characters and settings digitally
In other environments, it presents a frustrating roadblock against aggressive decks
Another downside of Portable Hole comes right from its types: being an artifact in an Urzas Saga meta, means that hate cards are plenty, so you dont want to play a removal that dies to cards such as Kolaghans Command