I have a level 16 assassin, and I took the Shadow Blade Paragon Path. This gives me a shadow blade. My question is, can I enchant the shadow blade as if it were any normal light blade? Also the twilight Assassin power creates a duplicate that I can flank with and some other things, the DM and I are unsure if you can attack this duplicate, and if you can what it's Defences and HP are. We assume you can't as that info isn't given but I thought I'd ask to make sure. Thanks all.