Blend the base: In a blender, combine ice, milk, strawberry syrup, black vanilla cream, crushed Oreos, and condensed milk. Blend until frosty and thick.
Pour with marble effect: In a clear Starbucks-style cup, swirl a bit of strawberry syrup on the inside walls. Pour in the frappuccino mixture to create visible red-black-gray marbling.
Top it off goth-style: Add a generous swirl of whipped cream.
Decorate dramatically: Sprinkle on black cocoa crumble, place the red sugar rose delicately on top, and add your gothic dagger candy for that haunting final touch.
Serve immediately — best enjoyed under falling leaves and violin music 🎻