Ditto's poke-body states that it copys the opponent's active Pokémon's max HP. So...
A. If my opponent has an Expert Belt attatched, does Ditto get the extra 20 HP?
B. If Snowpoint Temple is in play, Does Ditto gain 20 HP from whatever it copies, or does is gain 20, and then just copy the opponent's HP?
C. If snowpoint Temple is in play, and my opponent has an SP active, does ditto Copy the base HP and then get 20, does it copy the extra 20, and then gain an ADDITIONAL 20, or does it just copy the base HP?
A. If my opponent has an Expert Belt attatched, does Ditto get the extra 20 HP?
B. If Snowpoint Temple is in play, Does Ditto gain 20 HP from whatever it copies, or does is gain 20, and then just copy the opponent's HP?
C. If snowpoint Temple is in play, and my opponent has an SP active, does ditto Copy the base HP and then get 20, does it copy the extra 20, and then gain an ADDITIONAL 20, or does it just copy the base HP?