Companion
Action - (4)
+1 Card
+1 Action
If this is the first time you play a Companion this turn, name a card.
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While this is in play, the card you named when you played the first Companion costs (1) less, but no less than (0).
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So... it's pretty much a Peddler/Highway Variant which works quite well with "Workshop"-like cards and even better with "Remodel"-like cards (since the other cards keep their price). However, since only one card is cheaper, it's weaker than Peddler if you want to buy different cards. If you could gain Victory Cards with this, it definitely would be too strong, I think. (4) is not a high price, and only a few would be enough to make Provinces WAY too cheap.
Any thoughts?
PS: Oh, and Band of Misfits could be a lot of fun with this.