Miracles are the closest equivalent to Infect or Curses decks I can think of. Decks with miracles are very dependent on the draw, and if you run a few, you will eventually see the need to run as many of them as possible. This deck started as a Gates-only Maze's End deck, but I then trimmed it and added more miracles to it. It can actually win in tournament practice, something none of my previous cheapo decks have ever been able to.