\subsection{Evard's Black Tentacles}\label{evards-black-tentacles}

\emph{4th---level conjuration}

\begin{itemize}
\tightlist
\item
  \textbf{Casting Time:} 1 action
\item
  \textbf{Range:} 90 feet
\item
  \textbf{Components:} V, S, M (a piece of tentacle from a giant octopus
  or a giant squid)
\item
  \textbf{Duration:} Concentration, up to 1 minute
\end{itemize}

Squirming, ebony tentacles fill a 20-foot square on ground that you can
see within range. For the duration, these tentacles turn the ground in
the area into difficult terrain.

When a creature enters the affected area for the first time on a turn or
starts its turn there, the creature must succeed on a Dexterity saving
throw or take 3d6 bludgeoning damage and be restrained by the tentacles
until the spell ends. A creature that starts its turn in the area and is
already restrained by the tentacles takes 3d6 bludgeoning damage.

A creature restrained by the tentacles can use its action to make a
Strength or Dexterity check (its choice) against your spell save DC. On
a success, it frees itself.
