Board Thread:Questions and Answers/@comment-34779323-20180301061614/@comment-31540246-20180301164548

As Harry explained, silver ability cards come at 8xp maximum which means that it would require 75 cards to max out that ability while gold ability cards come at 40xp which only takes 15 cards to fully max out an ability. You will by time naturally notice that purple and gold abilities are far more easier to max.