- extensive framework for dueling, tournaments, and events

- IP address command implementor
- miscellaneous minor fixes

Scripts/Spells/Sixth/Invisibility.cs

@@ -22,6 +22,17 @@ namespace Server.Spells.Sixth
 		{
 		}
 
+		public override bool CheckCast()
+		{
+			if ( Engines.ConPVP.DuelContext.CheckSuddenDeath( Caster ) )
+			{
+				Caster.SendMessage( 0x22, "You cannot cast this spell when in sudden death." );
+				return false;
+			}
+
+			return base.CheckCast();
+		}
+
 		public override void OnCast()
 		{
 			Caster.Target = new InternalTarget( this );