User blog comment:Dogerium/Card Ratings: Arena 0-8 ( Edition 2 )/@comment-26844381-20161029210443/@comment-25579104-20161106151824

S - Cards so good that you need to have atleast one of those to make a viable deck.

A - Really good cards.

B - Good cards.

C - Okay cards.

D - Bad cards.

F - Trash.