The Draconic visage is a very rare drop from iron, steel, mithril, lava, and black dragons. It is also dropped by Skeletal Wyverns and the King Black Dragon. The ring of wealth does not increase the chance of getting a draconic visage.
Making the shield
Players with level 90 Smithing can combine an anti-dragon shield with the draconic visage to create a dragonfire shield. Doing so grants 2,000 Smithing experience. If players do not have 90 Smithing, they may use a smithing boosting item such as a dwarven stout to forge the shield. Note that a dwarven stout (m) provides a +2 boost to a player's Smithing level, while an ordinary dwarven stout only provides a +1 boost. If the player has completed the Evil Dave part of the Recipe for Disaster quest, they may also use stew that boosts the Smithing skill for up to +6. Such a boost is a very rare occurrence however and players will generally settle for a +4 boost.
A draconic visage may also be taken to Oziach, a non-player character from the Dragon Slayer quest, who will assist in creating the shield for a sum of 1,250,000 coins.
Dropping monsters
Monster Combat level Quantity Rarity King Black Dragon 276 1 Very rare (1/5,000) Black dragon 227 1 Very rare (1/10,000) Iron dragon 189 1 Very rare (1/10,000) Lava dragon 252 1 Very rare (1/10,000) Mithril dragon 304 1 Very rare (1/10,000) Skeletal Wyvern 140 1 Very rare (1/10,000) Steel dragon 246 1 Very rare (1/10,000)