Remote feed biosnare
From Tardis Wiki, the free Doctor Who reference
A remote feed biosnare was a weapon which could be used to kill a person whose DNA it was programmed with. On an alternative Gallifrey, Kavil gave one to Valyes to use to assassinate Romana II. However, it did not work as it was attuned to the DNA of the Romana from their world. (AUDIO: Emancipation)
