Merlin's Gun

Alien nation:
What have you done?
You’re waging war
That hasn’t yet begun
So we humans warn you
We’ve built a device
We will be sorry to use
Unless you force us to Merlin’s Gun (x3)
It shoots black holes
And if you force us to Oh we won’t think twice
We will use it on you
At the first strike
We will end your moon
And with the second
We will engulf your sun
Merlin’s Gun (x8)
The most terrifying device (gun) ever conceived by man
Merlin’s Gun (x8)
The most efficient device ever built by man to destroy the universe