Angsty Oracle
Town
During each night phase, the Angsty Oracle may mark a player, these players will be notified when they are marked. When the Angsty Oracle dies, all marked players have their roles publicly revealed. The Angsty Oracle may choose to kill himself at any point in the game as long as there is at least one marked player alive.
EDIT: by demand of the fair and righteous OP I changed the role name from Suicidal Cop to Angsty Oracle.