Magic Forums

I was at my friends birthday party the other day and the party was being held in her garage. While everyone was chatting i felt something rub against my leg, i looked down and saw a black cat it then ran under the table. When i asked the birthday girl why a cat was in here she looked at me like i was crazy and said she didnt have a cat . All the doors were closed so a cat couldnt have come in or left. I asked the others and only one other person had seen a black cat run under the table. What exactly did i see?? Thanks for takijng the time to read this and help :)