Conversion replaces the existing type(s) of the using pokémon with the base type of one of the other moves known by the using pokémon. The move whose base type is used is random. It appears that the type that is converted to will be different from the current one, if possible.
The qualifier of base type of the move is not significant in most cases as there is nothing usunsual about the type of most moves. The exceptions to this are Hidden Power and Curse. Hidden Power is treated as the type determined by the pokémon's DVs for the purpose of determining strengths and weaknesses in the standard damage formula. However, only its base type of Normal in considered for the use of Conversion. Also, since the base type for Curse is ???, it does not have type information. Because of this, Conversion will not replace the current type(s) with the base type for Curse.
The type that has been switched to is displayed in a text message to the player when the move is successful. While converted, STAB for any moves used will be assigned based upon the current type, not the original type(s). The pokémon will return to its original type(s) after being switched out.
