\subsection{Demiplane}\label{demiplane}

\emph{8th-level conjuration}

\begin{itemize}
\tightlist
\item
  \textbf{Casting Time:} 1 action
\item
  \textbf{Range:} 60 feet
\item
  \textbf{Components:} S
\item
  \textbf{Duration:} 1 hour
\end{itemize}

You create a shadowy door on a flat solid surface that you can see
within range. The door is large enough to allow Medium creatures to pass
through unhindered. When opened, the door leads to a demiplane that
appears to be an empty room 30 feet in each dimension made of wood or
stone. 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.

Each time you cast this spell, you can create a new demiplane, or have
the shadowy door connect to a demiplane you created with a previous
casting of this spell. Additionally, if you know the nature and contents
of a demiplane created by a casting of this spell by another creature,
you can have the shadowy door connect to its demiplane instead.
