My friend plays Baratheon and Lannister decks, and I run Stark and Martell decks. I'm at a bit of a loss (literally), because I just can't come anywhere close to stopping him. His decks just move so incredibly fast, by the challenges phase of the first turn, his Baratheon deck usually has about 4 characters of 3+ strength, half with vigilant, and a good array of attachments and lands, and from that moment on, I'm strictly on defense, as I just can't keep up with that. His Lannister deck might even be faster on the rush, though the other is the stronger deck.
Can anyone give some suggestions as to deal with this? Our games have become so one-sided lately, that it's not really fun anymore.