What does the empty lamp do?

[Tor]

er, i found one near opal's place.

 

[DirtyD]

Tonight, search your town for the wisp and give him his lamp back and he will grant you 1 of 3 wishes. I forget what they all are... He'll clear out your weeds, give you furniture... or ??? i forget the last

 

[Majora]

Then WISP is in your town!
Search him!

 

[Tor]

well, i found it a few days ago :S
should i have checked for him then?

 

[bud]

Tonight, search your town for the wisp and give him his lamp back and he will grant you 1 of 3 wishes. I forget what they all are... He'll clear out your weeds, give you furniture... or ??? i forget the last

great now I'm curious to find out what the 3rd option is XD

 

[DirtyD]

i think it has to be on the same night

 

[Tor]

The third option is for him to kill all cockroaches. I just saw a video.
Also, I saw on the video... someone got a lamp, and the next month he appeared?

 

[Anna]

Wissssssssp

 

[Bottcm]

I have never seen the lamp

 

[AnimalCrossingFan]

At night, you'll hear a voice, and it'll tell you to come to it. It's really the ghost, Wisp. Once he's in the lamp, go to your attic and they 'rub' the lamp. Once you've done that, you can choose one of the following rewards: