Cheapest priced copy (The List): $0.49 at Card Kingdom, near mint, their price list as of .
Portable Hole 
Artifact · Uncommon · The List · #AFR-33
When this artifact enters, exile target nonland permanent an opponent controls with mana value 2 or less until this artifact leaves the battlefield.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
3 printings · $0.49 to $15.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Adventures in the Forgotten Realms | 33 | Uncommon | $0.59 | $2.49 |
| Adventures in the Forgotten Realms | 398 | Uncommon | $6.49 | $15.99 |
| The List | AFR-33 | Uncommon | $0.49 | — |
5 rulings from Wizards of the Coast
- 23 July 2021If a token is exiled this way, it will cease to exist and won't return to the battlefield.
- 23 July 2021We recommend keeping your Bag of Holding far, far away.
- 23 July 2021If Portable Hole leaves the battlefield before its ability resolves, the target permanent won't be exiled.
- 23 July 2021If an Aura is exiled this way, its owner chooses what it will enchant as it returns to the battlefield. An Aura put onto the battlefield this way doesn't target anything (so it could be attached to a permanent with shroud, for example), but the Aura's enchant ability restricts what it can be attached to. If the Aura can't legally be attached to anything, it remains in exile for the rest of the game.
- 23 July 2021Auras attached to the exiled permanent will be put into their owners' graveyards. Any Equipment will become unattached and remain on the battlefield. Any counters on the exiled permanent will cease to exist. When the card returns to the battlefield, it will be a new object with no connection to the card that was exiled.