>>31373451Yes, the move is still available, and the boost lasts after the move is used. For Porygon, since it's Normalium Z, it would only boost Normal moves, even after Porygon changed its type.
For Silvally, here's a new idea:
>Memories no longer exist>Instead, Z-crystals are used to change Silvally's type>They still give the 20% boost to their type>AND, if Silvally is holding a signature Z-crystal, he becomes the same type as that Pokemon, even if dual typed (ex: Fire/Dark Silvally w/ Incinium Z, or Electric/Psychic Slivally w/ Aloraichium Z)>Multi-Attack will also become dual typed>BUT, since you don't get the signature move, you can't use the Z-move (however, you still get the type boosts)There, I fixed Silvally.