automatic spell enhancement indexing

config/preamble.tex

@@ -237,7 +237,7 @@ bookmarks=true]%
 \newcommand{\sphere}[1]{\setcounter{spelllevel}{0}\renewcommand{\currentsphere}{#1}\index{#1}\section{\currentsphere}}
 \newcommand{\spelllevel}{\addtocounter{spelllevel}{1}%
 	\subsection{\currentsphere~ Level \arabic{spelllevel}}}
-\newcommand{\enhancement}[3]{\paragraph[(#1) #2: #3]{(#1) Enhancement -- #2:}}
+\newcommand{\enhancement}[3]{\paragraph[(#1) #2: #3]{(#1) Enhancement -- #2:}\index{Enhancement!#2}}
 \newcommand{\magicitem}[7]{\vspace{2em}\needspace{4em}\noindent\textbf{#1}
 \index{Magical Item!#1}