Blessed potion of polymorph asks user for monster to poly into

... unless there's some other form that would override the choice,
such as a worn dragon armor, lycanthropy, or vampirism.

The polymorph will be in effect for 10-24 turns.

src/cmd.c

@@ -1490,7 +1490,7 @@ wiz_panic(void)
 static int
 wiz_polyself(void)
 {
-    polyself(1);
+    polyself(POLY_CONTROLLED);
     return ECMD_OK;
 }