Unlike most rummaging effects, Chandra always leaves you up a card
The first is that it offers a huge array of options, you can always tell when someone has a Chrome Mox in their opening hand simply because it is the only plausible reason they could be thinking for so long
Heres an exclusive Magic: The Gathering Kaldheim card reveal and Commander deck build Introducing Fynn, the Fangbearer
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
I love the idea of sifting through your card database of choice and finding a way to express yourself
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