I can't quite figure out a balancing I'm happy with, but I like the idea of an unrestricted (at least by price) gainer. I was working on figuring out a "Gain a card" card, but then I thought it would just be used for greening and treasure. I think "Gain an action card" is a lot interesting, but I just can't price it. $4 seems about right based off Workshop, but then I think about Feast and it seems too cheap. More than that, though, and I start thinking it doesn't compare well to University, which also makes a Potion cost seem kinda silly. Maybe add more text? Terminal silver? One-shot? Non-terminal? "Gain a curse, if you do..."? There's gotta be a way to make it work well.