let \dicef use 2 dice for 12

layout.sty

@@ -349,6 +349,10 @@ bookmarks=true]%
 \newcommand\dicef[2][]{%
   #1%
   \setcounter{diceNo}{#2}%
+  \ifnum\value{diceNo}=12%
+    \epsdice[black]{6}%
+    \epsdice{6}%
+  \else%
     \ifnum\value{diceNo}>0%
       \whileboolexpr{%
         test {\ifnumcomp{\value{diceNo}}{>}{6}}%
@@ -360,6 +364,7 @@ bookmarks=true]%
     \else%
       \arabic{diceNo}%
     \fi%
+  \fi%
 }
 
 \newcounter{diceNo2}