Board Thread:General Discussion/@comment-177.83.240.88-20140505173658/@comment-24088226-20140505191045

http://valkyriecrusade.wikia.com/wiki/Category:Receive_Rewards

For lower level players, I suggest having a few Receive Rewards cards on your campaign team. If you activate a receive reward card during a regular campaign battle, you have a 100% chance of receiving an N card or sacred treasure (has no effect on AW fights). For low level players, this makes it easier to collect 4 of your 6 sacred treasures to get R cards and metal slimes (you will always have to duel for the remaining 2 sacred treasures), the excess N cards can be used to help level your cards up or sold for a few extra gold, and you can also collect extra Wizards, Summoners, Enchanters, and Mechanics for the creation of Androids and Sages to donate to the alliance goddesses or exchange for medals.

The ratio of receive reward cards vs cards capable of injuring the enemy is going to be dependant upon the strength of your damage cards vs the difficulty of what you are fighting. Area bosses at the end of maps such as 5-4 of the event map or AoE bosses can deal a lot of damage if you get unlucky, which can cost you a lot of soldiers/resources.