The only way to get it is to mod your game or to have a modder duplicate it for you.
They're spreading exponentially. Yes, a modder had to spawn the first ones, but then after he dupes it for someone, they could dupe it for their friends, and then those guys for their friends, and so on, and so on, so that in a month there will be a million of them and they won't be "unique" anymore and everyone will get rid of them.
The secret to life is honesty and fair dealing. If you can fake that, you've got it made.