Dracula vs. Dr. Doom
Dracula enters war with Latveria (think Vampire State/Curse of the Mutants/Doomwar)
Dracula enlists the help of every vampire in marvel folklore including Varnae.
Dracula's has figured out a magical enchantment that prevents the annihilation of all vampires (like Dr. Strange did)
Can Dracula take down Latveria?