The Guardian Abilities card has been fixed. I got it yesterday by doing this: Create one new character of the class of your choice and watch the first cut scene where the Guardian is being revived by the Ghost, then repeat this process with the 2 remaining classes. Once you've watched the cut scene three times with three new characters, one of each class, the card should pop. It won't read on the screen, but your Grimoire will be updated. If you already have 3 characters created, you will have to delete one of them before you start this process.

I tried this and it didn't work. Not sure where to go from here.