Board Thread:Game Discussion/@comment-12919914-20130912020226/@comment-11490363-20130913145856

Footballchemist wrote: I've got one trick:

 Currently the way it’s set up, using your rubies will pull the maximum number of possible pulls from the ruby space bridge. So, if you have 400 rubies, you would pull 5 Sludges at 75 rubies apiece even if you only wanted one.

 A way around this is to pull gold medals until your base is maxed at 200. Then, sell or use one card to upgrade so that you have 199 cards. Then you can pull from the ruby medal bridge and only get one card, conserving your rubies for higher level cards.

 This is useful if you are pushing for a higher level ruby pull, but decide that a lower level card would benefit you by losing less battles or using less cubes on the boss

Brilliant!