What's everyone's level of frustration when they read a card, think it does something, and then find out the hard way it doesn't work how you expected it to? I'm more referring to when a card is ambiguously worded than when you misread a clearly worded card, but both are valid.
Also, tangential topic. Magic Players can move the needle and get a card's flavor text fixed. Is the card editing in AGoT good enough?