Slayer task/Fossil Island wyverns

Fossil Island Wyverns are a Slayer Monster requiring 66 Slayer to kill, 60 Combat, as well as the completion of the quests Elemental Workshop and Bone Voyage to be assigned as a slayer task.

Wyverns often use the icy breath attack dealing large damage and reducing stats if a protective shield is not equipped. An Elemental Shield, Mind Shield, Dragonfire Shield, Dragonfire Ward, or Ancient Wyvern Shield must be equipped in order to fight them.

The Anti-dragon shield, Protect from Magic prayer, and antifire potions CAN NOT be used as a substitute for the shields, As such using 2 handed weapons such as the Toxic Blowpipe or Abyssal Bludgeon is highly discouraged.

Despite offering protection from the icy breath effect, only the Ancient wyvern shield provides complete protection, preventing the accompanying freeze effect, which prevents attacking and movement. The Elemental Shield, Mind Shield, Dragonfire Shield, Dragonfire Ward will only prevent the damage and stat reductions.

Wyverns may drop Fossil Island fossils of various sizes. Both caves have a Fossil Storage box by their respective entrances.

Shield Name	Prevents Damage	Prevents Stat Drain	Prevents Freeze	Notes
Anti-dragon shield	No	No	No
Elemental or Mind shield	Yes	Yes	No	Obtained during Elemental Workshop I and II.
Dragonfire shield	Yes	Yes	No	Requires 90 , an Anti-dragon shield, and a Draconic visage to create.
Dragonfire ward	Yes	Yes	No	Requires 90 , an Anti-dragon shield, and a Skeletal visage to create.
Ancient wyvern shield	Yes	Yes	Yes	Requires 66 , 66 , an Elemental shield, and a Wyvern visage to create.

Slayer Unlocks[edit | edit source]

	Unlock	Points cost	Notes
	Stop the Wyvern	500	This Unlock allows you to block fossil island wyverns without it counting towards your block list, albeit much more expensive than using a block list slot in terms of slayer points used.
	Wyvern-nother two	100	The extensive unlock for fossil island wyverns, which brings all tasks amounts up to a range of 55-75 assigned per task.

Monster	Combat Level	Slayer XP	Locations	Notes
Spitting Wyvern	139	205	Wyvern Cave Task-Only Wyvern cave	Attacks with melee, ranged, and Icy breath, but seeing as the ranged attack is not typeless and can be prayed against, it makes it more favorable to kill over taloned wyverns, and deal relatively lower damage with slightly better drops.
Taloned Wyvern	147	205	Wyvern Cave Task-Only Wyvern cave	Attacks with melee, typeless ranged, and ice breath, making it the least favorable of the wyverns to kill.
Long-tailed Wyvern	152	205	Wyvern Cave Task-Only Wyvern cave	Attack with only melee and Ice breath, so it is recommended to either range with an Ancient wyvern shield or melee with protect from melee active.
Ancient Wyvern	210	315	Wyvern Cave Task-Only Wyvern cave	The Ancient Wyvern resembles the Long-tailed wyvern, but seems to be a stronger variant, requiring 82 slayer to kill, although it can only be killed on a fossil island wyvern slayer task.

Location	Maplink	Amount	Multicombat	Cannonable	Safespottable	Notes
Wyvern Cave, east of Museum Camp		4 Spitting Wyvern 4 Taloned Wyvern 4 Long-tailed Wyvern 2 Ancient Wyvern	No	No	No
Task-only Wyvern Cave, inside the Mushroom Forest		4 Spitting Wyvern 4 Taloned Wyvern 4 Long-tailed Wyvern 3 Ancient Wyvern	No	No	No	Only killable when assigned a Fossil Island Wyverns slayer task