Lost spirit

Lost spirit was removed from RuneScape after an update, but still exists in-game for those who had obtained it.

Lost spirit
Detailed
Release	27 October 2015 (Update)
Members	No
Members	No
Quest item	No
Quest item	No
Tradeable	No
Tradeable	No
Equipable	No
Equipable	No
Stackable	No
Stackable	No
Disassembly	No
Disassembly	No
Value	20 coins
Value	20 coins
Alchemy	Not alchemisable
Alchemy	Not alchemisable
Destroy	You will have to find another lost spirit if you let this one loose.
On death	Reclaimable
On death	Reclaimable
Reclaim	3
Reclaim	3
Sacrifice	12
Sacrifice	12
Exchange	Not sold
Weight	0.01 kg
Examine	Sinn Derkwill in the Underworld will reward you for bringing this to him.

Lost spirits may appear when skilling in the surface world during the 2015 Hallowe'en event. Collecting one gives half the experience provided by a regular jack of trades aura's reward book in any skill. It should then be returned to Sinn Derkwill in the Underworld for 100 Noumenon Favour. Only two lost spirits will appear for a player per day. When the first spirit appears, this message is shown: A lost spirit has appeared nearby! The second one arrives with the message: A lost spirit has appeared nearby, you feel like it'll be the last to appear for you today... Unlike Mysterious meteorites, Lost spirits that appear to other players cannot be claimed.