We haven't. I am still very much here. If you are speaking of Samantha Stevens, I'd say camera tricks. However, there are certainly invisibility spells.
pollution will go up if they disapear ozone layer will go down if wetlands disapear many smoggy days
crash it into a lake
Their species was wiped out by a meteor.
as you get older it starts to disapear
They are still around today
Make it disapear
your penguin will disapear
It should be witches'. Example: Witches' brooms
it is simple you hold in tab and zoom in 600
There was an old cheat for that, but the zwinky team took it away. :)
Because they Glaciers have melted and made Beringia invisible.
Naw dawg, they stick around for ever.