I have been wondering about this for a while now. When I cast Demiplane and for example trick a bandit into entering the door, can I then cancel the spells effect and remove the door, trapping the bandit? Or does it stay there until the hour is over?

Duration: 1 hour

The description isn't super clear on this aside from the time limit shown.

When the spell ends, the door disappears, and any creatures or objects inside the demiplane remain trapped there, as the door also disappears from the other side.


3 Answers 3


No, you cannot end the effect of Demiplane early.

It is not a concentration spell, so you can't just stop concentrating to drop the effect. No part of its effect allows it to end prematurely at-will, either.

You'd need to either ensure the bandit is inside the demiplane when the spell expires. There are a lot of tools at your disposal to trick or ensnare the bandit to accomplish this task.

  • 4
    \$\begingroup\$ It's not the at-will standard the OP was after, but Dispel could potentially be used to end Demiplane early. \$\endgroup\$
    – Upper_Case
    Commented Mar 5, 2020 at 16:46
  • \$\begingroup\$ @Upper_Case i'll see how it will work out with the Dispel, thanks for the tip \$\endgroup\$
    – Ertje
    Commented Mar 9, 2020 at 13:19

You can end Demiplane's doorway early if you cast an appropriate spell to cancel an 8th level spell, or can create another effect that is able to suppress magic, for example:

  • Dispel Magic (contested against 8th Level Spell or 9th Level Spell)
  • Antimagic Field (Spell)
  • Dead Magic Zone (example: Wild Magic)
  • Beholder's Gaze (Main Eye)

If you could end a spell at will the spell would be listed as “Up to (#) (Duration)” or it would specify so in the spell description.


The Demiplane spell doesn't mention that it may be dismissed in any way on its own, so on it own it will last for its full duration.

If you wish to close the door prematurely, you can use Dispel Magic, as the open door to the Demiplane can count as either a magical object or a magical effect.


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