The Metal Dragon Boost will boost the income earnings of your metal dragons in DragonVale. Metal dragon boost has an 1.2 bonus to all metal type dragons in your DragonVale while all opposite will get a negative effect of -0.8. You can buy this Metal Dragon Boost at level 19 for the price of 250,000 dragon cash and you can sell it for 125,000 dragon cash if you don’t want it anymore. You also get the experience points of 250,000 when you completed building the Metal Dragon Boost.
“The Metal Dragon Master lives in a metal house constructed of unknown materials. Whatever it’s made of, Metal Dragons on the island love it! Unfortunately Plant Dragons are not so keen.”