While this looks cool, and I like it, buff cards generally want to go on minions that go face, so I'm not sure this will see much play.

I wonder, will this be able to cast a secret you already have? if so it's much worse. Otherwise it seems okay as random secrets need to be played around much more than secrets you already include in your deck.

It appears that now that druid has lost all it's identity (ramp and then armor gain), they decided to make it a life gaining class for some reason.