I currently have two decks, a white/blue and a white/red. I used to play Yu-gi-oh, so when I first started with magic, one of the things that bothered me was the lack of counters in all the colors. I tend to stick with white because I’m a pretty defensive player (the white/red was my attempt to fix that, and it’s actually pretty decent). I played Yu-gi-oh with a deck that gave me a lot of life, and that translated into magic. Hence, my white/blue was my first deck.
I’m thinking of making a white/black with the idea of having it revolve around Sanguine’s Bond, white life giving cards, and Ajani’s Pridemates.
@Raevarin kicks my butt all the time though, but two headed giants where we’re teamed up together? Pwnage. He’s super offensive, and my white/blue is great with him.
I have plainswalkers in my decks, and I’ve used them, but I haven’t used their super abilities. I play for fun, and so I’ve always figured the super ability is for OMG I’M GOING TO DIE NEXT TURN or something. Both @Raevarin and I like to toy with each other if it is clear one of us has already won.