User blog comment:FutureKnightX/Deck Guide-The Dragon with Infinite Lives/@comment-839017-20150208212104/@comment-11372432-20150208213223

Bloody Dance does what Energy does, and does it at no cost, while still being a Deep card. Non-Deep spells are cards that enable possibilities that are otherwise unavailable in a 100% Deep build, or are so much better than a Deep card that does something similar.

I forgot about Vrykolakas and that seems like a really good idea, but I should stick with ENG cards and that guy is unfortunately JP only as of time of this writing. But I'll add him with a disclaimer about that.