This card features a striking and spooky Halloween-themed birthday design. The main focus is a four-tiered cake adorned in black and deep red, with intricate gothic details like black lace patterns and web-like designs. The cake is topped with tall, black candles, adding to the eerie atmosphere. The background showcases a full moon surrounded by dark, twisted trees, and silhouettes of bats flying across the sky. Jack-o'-lanterns with menacing expressions sit at the base of the cake, further enhancing the Halloween vibe. The text "Happy Birthday" is displayed at the top in a light, elegant font, with "On Halloween" written at the bottom, completing the theme. This card would be perfect for someone celebrating their birthday on Halloween, combining the festive elements of both occasions in a visually captivating way.