Master's Greetings Card Bomb (Circus Trap)

The greetings card bomb in Philips’ car is explicitly tied to the Master’s trap for the Doctor. He describes it as a ‘small little gallantry on the eve of battle,’ revealing his dark humor and the personal nature of his vendetta. The bomb’s dual role—as both a weapon and a symbolic gesture—highlights the Master’s layered deceptions and his confidence in the Doctor’s inevitable arrival at the circus.

The 'greetings card bomb' is the centerpiece of the Master’s trap, disguised as an innocuous item to lure the Doctor into a false sense of security. Planted in Professor Philips’ abandoned car, it is designed to explode when the Doctor investigates, ensuring his destruction at the circus. The Master describes it as a 'small little gallantry on the eve of battle,' revealing his sadistic pleasure in the deception. Its presence in the car is the final piece of the puzzle, ensuring the Doctor’s arrival at the circus where the Master’s ambush awaits.