I...got lazy with this page.
The Ace of Spade is associated with death. Perceptor likely does not recognize the symbol since he's never been to Earth. But Mysterious Guy does...
The card in the last panel is based on this gorgeous cover used for All Hail Megatron #15 (which I never read).
That said, #3 is done! Tune in for the next issue updating on...whenever!