Today I added metal dragons. They can be teleported to by using monster 2 teleports. Metal dragons include Bronze, Iron, and Steel dragons. I tried to implement most runescape metal dragon drops into the server so the following are dropped by metal dragons:
Dragon full helm
Dragonic visage (iron and steel only) - drop rate = 1/15
Dragon platelegs (iron and steel only)
Dragon plateskirt (all)
Cut dragonstones
50-200 blood and death runes
Coins 50-200k
And plenty more, these are the main rare drops.