Fixed exploit

Fixed exploit. Added test Shield scroll.  Tweaked a few creatures.

_module/nss/sc_dc30_dex_chk.nss

@@ -0,0 +1,19 @@
+//:://///////////////////////////////////////////////////////////////////////
+/*
+    sc_dc30_dex_chk.nss
+
+    Does a DC 30 Dexterity check in a conversation.
+
+*/
+//:://///////////////////////////////////////////////////////////////////////
+
+int StartingConditional()
+{
+//:: Declare major variables
+    object oPC      = GetPCSpeaker();
+    int nDexCheck   = d20() + GetAbilityScore(oPC, ABILITY_DEXTERITY, FALSE);
+
+    if (nDexCheck <= 29) return FALSE;
+
+    return TRUE;
+}