Doesn't QUITE count as a "Good" deck, so I'm posting it here instead of in Rastafla's topic.
Got Black Dragons and since the SoR buff makes any other DragonsTosis deck hard to stand out, I instead came up with this. BHs for Rainbow hate and healing, Pests to round out the denial and provide enough quanta for the expensive Dragons, and I threw the Dusk, Dagger, and Gargoyle for good old-fashioned defense and damage respectively.
I suspect it could do better given time, but since I finally got my first Blue Nymph I want to celebrate with a deck centering around it.