Board Thread:Questions and Answers/@comment-6011882-20130308145601/@comment-5706972-20130308173511

I heard 'time travel', but I haven't gotten to the point in time that I try it, so I'm not sure... ;)

The element bonus only applies to the cards of your element. If you are forest and have all water cards except for 1 forest card - that 1 card will get the 5% bonus.

I don't know how it works for the Raid bosses, but I am inclined to say 'no'.