Possible results of fire + obsidian:
They can create lava or the bone dragon (limited halloween dragon).
Reported results of lightning + obsidian are:obsidianfireflyairmotleyspringaquamarinesolar eclipseequinoxmagneticcrystalstorm
Reported results of cold + obsidian are:ObsidianLavaMountainFrostfireRainbowGlacierGhostAirScorchCoralPaperFlowerBlue Dragon
40%earth 40%obsidian 10% other
You can get any of the following dragons, Scorch, Firefly, Quake, Obsidian, Lava, and Crystal.
The top five results of breeding moss + obsidian are:Solar EclipsePoisonLavaObsidianFlower
Storm
The five most common results of breeding chrome and flower dragons are:ForgeBrassFlowerPollenPoison
Results of current and tree dragons can be mud, crystal, or seaweed dragons.
probably a chrome
You get a plant dragon.
You get the scorch dragon
Blue fire