MArcomage

Requires History module?

Oh, you're right...
It would be only able after a Swift/Quick card...

Is 6 the maximum value for N? Or is it just the maximum value for the Attack? I ask because if the maximum for N is 6, the stock gain is maxed at 6/4, a non-integer value. What is the intended maximum to the stock gain?

It's the max. resource you can gain (without cost). It would much to overpowered if you get about 5 stock out of a quick common...