Skeletal Wyvern

Skeletal Wyvern (Draconis Ossis) are very dangerous monsters which can drop Granite legs, and the rare Draconic Visage. Level 72 Slayer is required to kill them. An Elemental shield, Mind shield or Dragonfire Shield must be equipped when fighting them. They are the lowest leveled monster that drops the Draconic Visage. Killing one is required for the Falador Achievement Diary

Strengths and Weaknesses

 * The player must equip an Elemental shield, Mind shield or Dragonfire Shield whilst fighting these or he/she will be hit for very significant damage, along with heavily reduced stats. Rune armour or better with Barrows gloves together with an Amulet of glory or Amulet of fury is recommended. Players can also use the Protect from Magic prayer to lower the max hit of the ice breath attack if they are not wearing a shield, which negates stat loss as well as lowers max hit to 20 so it is not as effective as any of the shields. Wyverns attack with either melee or range. They also possess a freezing-breath mage attack similar to dragon breath, but which can also sometimes freeze players in a fashion similar to the Ancient Magicks ice barrage spell. Contrary to popular belief, Wyvern breath's accuracy is NOT affected by Armour/Magic defence, it will hit regardless of your armour; wearing the shields is the only real option that can affect their breath. You can completely avoid their breath by standing about 6 spaces away or more, because they will only use their Ranged attack if you are out of their breath attack's reach. With Protect from Missiles you can completely avoid damage by using Range or Magic with this method. They have high Defense, high Attack and high Hitpoints making them very challenging opponents.


 * Using the Protect from Melee Prayer and Prayer potions is recommended as they hit fairly high and regularly. Players can still take damage from the freezing-breath attack but much less overall damage results when you use Protect from Melee. Because of the elemental/mind shield requirement, ranging attacks are only possible with one-handed weapons. On the defense, note that when wyverns jump up and emit a blue glow then they are about to make a ranged attack. Players can then momentarily switch to the Protect from Ranged prayer and only suffer damage from the ice breath mage attack.


 * Wyverns have an incredibly high Mage defense; players using this method often need over 100 casts of slayer dart or spells using blood runes to kill the creature.


 * It is worthwhile to first attack a wyvern with a poison type weapon, such as a dragon dagger. Inflict a poison wound, and then revert to your preferred attack weapon and style. It seems that skeletal wyverns have a weakness to slashing attacks. It also has been reported that there is a safe place close to the entrance where one can range or mage a wyvern on the other side of the entrance with impunity. However, this safespot only works once the Skeletal Wyverns become tolerant.


 * It should be noted that despite being skeletal creatures they are not classified as undead, but rather animated piles of bones. As such wyverns are not vulnerable to the effects of the Salve Amulet or Crumble Undead. Note as well that they are not classed as dragons either (even though they drop the Draconic Visage, so that the Fist of Guthix Dragon Slayer Gloves do not give bonuses when fighting them and the Antifire potion has no effect on the wyvern's ice breath attack.

Locations
Asgarnian Ice Caves

Drops
100% drop: Wyvern bones
 * 20-420 Coins
 * 2 Charms (Crimson are very common)

Runes

 * 11-64 Air runes
 * 13-30 Water runes
 * 10 Chaos runes
 * 3 Law runes
 * 7-11 Blood runes
 * Chaos talisman
 * Cosmic talisman
 * 5-14 Soul runes
 * 60 noted Pure essence

Weapons and armours

 * Black axe
 * Adamant axe
 * Dragon Dagger (P+) (rare)
 * Mithril sword
 * Black sword
 * Snakeskin chaps
 * Granite legs

Bolts

 * 3-21 Bone bolts
 * 8-26 Mithril bolts
 * 7-29 Adamant bolts
 * 6-22 Runite bolts
 * Adamant crossbow (u)

Others

 * Draconic visage (Very Rare)
 * Clue scroll (Level 3)
 * Shield left half
 * Lobster (3, unnoted)
 * Bass
 * Herbs
 * Limpwurt seed
 * Jangerberry seed
 * Wildblood seed
 * Tarromin seed
 * Ranarr seed
 * Super attack potion (1)
 * Defence potion(3)
 * Earth battlestaff
 * Uncut Gem