$4 Action
Reveal the top card of your deck. Draw it, discard it, or trash it.
If you draw it, +2 actions.
If you discard it, +2 cards.
If you trash it, +$3.
I'm not sure of the balance on the last option, but I feel the first two are about right for a band of misfits kinda card. For $4, you either get a Village, a nerfed Smithy, or a weird Trade Route. None of those would probably be good at $4, but the flexibility (and being able to react to what the top card actually is) makes it worthwhile...I hope.