it is a rare chance to drop from metal dragons i think all but bronze
Draconic visage (1/8500kills)
from what i know i would suggest 10k to be the the odds of it dropping visage
a visage drop is almost completely random. wearing a ring of wealth will increase you chances but i wouldn't go to irons just looking for a visage.
The chance of obtaining a Draconic visage drop from a Black dragon is estimated at 1/13,099 using gathered Adventurer's Log data as of 18 September 2012.
Same Chances of getting a Dragon Full Helm from a Mithril Dragon.
they are used to make the dragon fire shield can be sold for a fair amount of gp.
As I've said before there is no exact percentage on how often iron dragons drop draconic visage's but just that it is a very rare drop.
the best way is to have a anti dragon sheild, an abyssal whip, full dragon armor, and a little food and free inventory slots.
There is no set number of how many times you need to kill an iron dragon to obtain a draconic visage. Some people can obtain a visage within 100 kills and a lucky few even their first however around 99% of people find trying to obtain a visage very hard as the drop rate is estimated from 1/2500 all the way to 1/15000! I myself have killed around 10,5k Dragons in total and around 1,200 of those kills being the King Black Dragon. I have failed to obtain a visage so far. Good Luck and don't give up hope!
Killing high-level dragons, King Black Dragon and Mithril Dragons work best.
There are 3 Way(s) you can get a Draconic Visage:-1st Way-Killing the King Black Dragon or a regular black dragon ( Rare Drop ).-2nd Way- ( Best )Killing the Mithril Dragon, ( Rare Drop ) also drops Dragon Full Helm ( V Rare Drop )-3rd Way- ( Easiest )Buying it off another player, either in the grand exchange, or on world 2.
The ring of wealth does increase the chance of a draconic visage drop; However it does not increase the chance of some things such as clue scrolls. That is incorrect. The Draconic Visage is a bonus drop, and, therefore, is NOT affected by a Ring of Wealth. CrushAnswer