melvni:
For your Magic Room and choice item question: The answer is neither. Magic Room's effect prevents the choice item effect from affecting those moves, since Magic Room was still in effect as those moves were used. My description for Choice Band states, in part: "If there is a first move that the holder chose for use and that wasn't prevented from being used (and where the holder held this item as it started to use the move, since holder became active [...]), holder can't choose any other move for use (while holder is holding this item) [...]". (During Magic Room's effect, each active Pokemon is generally considered to be holding no items.) Accordingly, the holder of the choice item is free to choose any move as normal when Magic Room ends.f a Pokemon holding a choice item switches in while Magic Room is active, uses a move, uses a second move, and Magic Room ends, is it locked into the first move, the second move, or neither? I know that if Magic Room stops you from being locked into a move then you become locked into it again when the effect ends, but I've never seen the situation I outlined above explained (even if there's a good chance that the result is you get locked into the first move as would be expected).