Prepare Spooky tortilla chips, if you’re using them; set aside.
Blend cream cheese and salsa in a blender or food processor.
Spread cream cheese mixture in a round serving or pie plate; smooth guacamole over top, leaving ½-inch border.
Place sour cream in a plastic food storage bag; seal bag and cut off the corner of bag. Pipe sour cream in circles over the guacamole. Run a skewer through sour cream to make “spider web.”