If you are using a dragon based deck or are thinking of using one then this set is the one you want. Just like the promotional text says, this half of the year will be all about dragons. Personally I am now dreading going up against these new dragons due to their easy one turn kills and apparent invulnerability to being dark holed, raigeki'd or torrential'd. Will definitely see more dragon decks being played from the release of this set.
Overall I would give this a 4/5 with the extra star being out of reach because this deck will be too annoying to take down XD