Ruling Double Weakness?

Luispipe8

Pokémon Professor
Member
Card in question:

89-deoxys-and-rayquaza-legend.jpg
90-deoxys-and-rayquaza-legend.jpg


So, this Pokémon has a [C][P] Weakness. What would happen if a Pokémon with both types (let's say a mirror match) attacks this one? Is the Weakness quadruplicated, resulting in a whopping 600 damage? :p
 
Top