The Phantom Ruby (ファントムルビー Fantomu Rubī) is an object that appears in the Sonic the Hedgehog series. It is an interdimensional gemstone of incredible power that was fought over by several parties across a pair of different time periods.
my little sister was like "hey can you help me make a themed tarot deck" and i was like "OH SO YOU'RE SAYING WE CAN PUT CHARACTERS INTO FUN LITTLE BOXES WITH THIS" and she was like "oh no"