Guardian Animals w/ Backup Wincon

What exactly you want will depend on your opponent, but largely you want to ramp as fast as possible and play Guardian Animals to get minions out to defend with Teacher's Pet, clear boards with Lake Thresher, and draw cards with Twilight Runner.

You want to have your Teacher's Pet ready to defend if necessary, but otherwise you're speeding your way to Guardian Animals in order to get moving and take down that annoying aggro. Swipe can take down a lot of boards too.