devtrackers.gg
The card also doubles as a ship decoration.
EDIT: the card requires you to have gausss maxed before it can spawn.
You have provided us with closure on a informal betting pool today. Since release we were checking who would be first to find this very intentionally obscured easter egg. When we checked a bit after release on September 9th only 9 people had found it. And we found no record of it being shared. And today we all receive closure.