Initially, I just wanted any deck that didn't rely on blue, because I was pretty sure it would be the most popular colour. So, I took a general purpose card,
Black Lotus, for my first pick (I wanted
Sol Ring but jatill beat me to it!) and waited to see what colours other people claimed.
I went with Oath because I was hoping the AI would play it right, and because I was hoping that the rather different set of cards I'd need for that would be easier to draft than if I'd done a weenie or blue deck. I then grabbed all the black tutors, because when you only have one copy of each card, those help even more than usual to get what you need to make the deck work. I also grabbed them early because I thought grinnin might take some, but fortunately his early picks didn't interest me, other than dark ritual, and of course the mox, but I had no chance on that one.
I'd been thinking of making an eldrazi deck at first, taking the eldrazi lands and everything, but somehow it kind of got away from that. And when monopoman took emrakul and then all is dust, I buried that plan and took other fatties instead. He really surprised me when he took sneak attack and emrakul; I didn't care about sneak attack but I was pissed when he snagged emrakul and then all is dust :p That's why my next picks were the best fatties remaining; I was scared he'd take them!