Board Thread:LOC General Discussion/@comment-216.125.251.254-20130204164334/@comment-5706972-20130514135400

Check the percentages on the Skills page. Everybody has their own methods of what % to use. I had 40% fail 8 times in a row, and I had 20% succeed 3 times in a row - but it is all random...

Skilling up the cards you are sacrificing DOES help - every 2 levels (like 3, 5, 7, 9) equals double the %