Talk:Evolution & Amalgamation/@comment-76.184.112.128-20150726232740/@comment-26488388-20150727001834

Don't use arcana pre-evolution because only 5% of stats are carried over during amalgamation/evolution. Use arcana ONLY in a card's final form (there are exceptions of course, for cards that are 4* but have useful skills, such as Scylla and Snow White).

You will know once you've max'd out arcana usage by refreshing the unit screen and checking that card's stats...so be careful not to go over the stat limit as you are wasting arcana.