Board Thread:Question and Answer/@comment-67.249.65.41-20160222213013/@comment-29272680-20160224064052

Ohh I see. you are really close! :o Good Luck with your second Genie!

Well, you need just 18 cards to make a Slime to lvl 27 if you use Arcana Blessing and Arcana Training. If that's what you meant with feeding 100 cards a day to Slimes.. http://valkyriecrusade.wikia.com/wiki/Upgrade/Slime