The Watchers Awaken

Mulligan hard for catalyst, sentry, or board wipes depending on what sort of deck you're playing against.

Don't be afraid to play blighted ravine to little value (if you have other wipes in hand)-- you have a lot of board wipes and it's better to prevent them from developing than it is to die holding it. Also, if you can matron-matron, matron-rekindler-Trundle, or matron-Trundle you've set up your watcher play and developed a solid defense.

There are two three ways to win:

Against aggro, wipe them until they surrender. Against everyone else, have a stompy late game, or cheat/play watcher.