Dear Eric: How long do you keep greeting cards like birthday, congratulations, holidays, thank you, and so on? I understand keeping those with sentimental value, but I tend to keep all of them.

DEAR ERIC: How long do you keep greeting cards like birthday, congratulations, holidays, thank you, and so on? I understand keeping those with sentimental value, but I tend to keep all of them.

Dear Eric: How long do you keep greeting cards like birthday, congratulations, holidays, thank you, and so on? I understand keeping those with sentimental value, but I tend to keep all of them.

While some of them, like the Golden and Wet Mutation, are relatively easy to obtain, others, like the Disco Mutation, have specific conditions when they appear in the game. This article tells you ...