Unholy Hand Grenade

After countless killer rabbits deaths (and killer worms too) by the Holy Hand Grenade, the Rabbit of Caerbannog son finally managed to put its paws in one that was launched without the count of three, therefore inactivated.

He had put in it all his evilness, changing its holiness to unholiness. Instead of three, the count is now the unholy number: six hundred and sixty six.

Because rabbits can't count besides one carrot or many carrots, they have never used the Unholy Hand Grenade. Now it remains an artifact in our vaults.