COMBOS WITH SCOUT (RIP)
Captain: Oh, what could have been. Cruel world! Captain lets you play a Scout now, and then play a Scout next turn, and boom goes the dynamite, as they say. Since you're usually willing to pay up to $6 for your first Scout, this is just giving you some additional flexibility on something you were going to do anyway. Watch out for the Scout pile to run, though. That can really wreck your day.
Church: It's important here to make sure you set aside non-Green cards—your Actions, Treasures, etc.—and let your Green cards get discarded, go back into your shuffle, and get picked up by your Scouts. For instance, when you buy an early Duchy, Church might tempt you to make it skip the reshuffle, but then it will be like your 5th and 6th Scout were for nothing. Sad times.