Triggerrer

Triggerrer noun. A person who triggers an event, or series of events using a literal trigger. The word cannot be used as a permanent title; it can only be used to describe the person, when referring to the time of the triggering. The word was first used by Woodrow Wilson to refer to Gavrilo Princip, who by using a trigger to kill Archduke Franz Ferdinard triggered the First World War.