It's not a terrible card; 2 icons and a "return to hand" effect is a nice hedge against failure, but I am not sure how often this will get played, given that 2 XP in will get you a Peter Sylvestre (2), "Look what I found!" (2), .18 Derringer (2), or 2 copies of Brute Force or Sharp Vision. I suppose Silas might like a situation where he contributes this and something else for, say, a +4 to a skill test, draws badly, then pulls the second card back with his Reaction Ability and this back with its own ability. That would feel pretty good.
Max 1 committed per skill test.
If this test fails, return Unexpected Courage to your hand.
The reason you take this is a little tricky. But it allows you to fail by two less on test you would never pass, with things like old keyring and look what I found. In a deck that uses covenants and blessed tokens, you can guarantee you get a two on the chaos token, +2 from unexpected courage, then you can drop Oops, Dumb Luck, look what I found or anything else… Then keep unexpected courage. With granny Orne, you can adjust your values even more, if you want to pass by zero or fail by one and keep this card in your hand.
It’s also great to give to allies, if they don’t pass, oh well, next time they might! And you can recur it with True Survivor. Neat how one little sentence can make a card worth two XP.