Now, for the real question on everyone's mind.
How Do These Cards Combo With Scout?
Quite well, obviously. Lost City makes for a really nice 3-card combo with Scout and Ambassador. You buy Scout, you buy Ambassador, you Ambassador your Scout over to your opponent, and then when you buy Lost City, hey, maybe that extra Card they draw is a Scout. Throne Room makes this an even stronger 4-card combo. Give them two Scouts, and you can buy another Lost City. Maybe. Don't get too carried away.
With Magpie, the combo is so obvious I don't even need to spell it out. Magpie has the words Action and Victory card printed on it, for goodness sake. Can you think of an Action card that does something with Victory cards? No, not Crossroads. Not Nobles. Not Rebuild. Not Baron. Not Bureaucrat. Not Dame Josephine. Here, let me help you, this is embarrassing: Scout.
Hero says (This is not in the supply.) But Scout is in the supply. You generally want to have a Supply card, in addition to Hero. Hero combos with supply cards. And who knows, maybe this elusive Champion card turns into Scout.
That's synergy, folks.