I don't think there's any good to get the IP via MWS unless you get someone to connect directly to your IP by using the "Wait" feature of MWSPlay.

It was Sephiroth; he always makes the same comment when someone plays Dark Confidant.

Just wanted to throw in my 2 cents since Sephiroth is such a tool and I've played many games against him.

1) I'm almost positive he's Italian, he'll occasionally make references to MtG sites and usually mentions an Italian site along with SCG and TMD.

2) He's not so good with his English, which is really apparent when he has to think of a come back.  One of his favorite come backs is "you are delusional", but misspelled.  It's pretty hilarious when a guy as loud and agressive as Sephiroth is silent for 30 seconds and then says that.

3) He will stack the deck.  Be sure to always check that it's T1 legal.  Sometime he'll start with a legal deck and then switch to a stacked deck for g2, g3, etc.  It's usually a storm combo deck that he does this with.  He also has a deck with 10 cards (or less, can't remember) that he tries to switch in, but that's pretty obvious to spot and catch.

4) If you beat him or refuse to play another game, he'll happily load up another deck, goldfish against you, tell you he beat you and then immediately quit.  Definitely some self esteem issues here.

5) He of course regularly switches user names and is especially fond of creating games or join notes with things like "<RANDOM_USER_NAME_HERE> = Sephiroth".

Good luck guys!

Casanova