Checks to see if it is the opening turn (starting a new game), if so, Download won't work. This is because Download takes into account vitamins and items, so it needs to use the BattleStat and the stat alone.
Pokemon that is using the move, as well as seeing the opposing pokemon.
N/A
N/A
Returns true if ability is used successful, false if not.
Rest..._args: any[]
Download raises either the Attack stat or Special Attack stat by one stage depending on the foe's currently lowest defensive stat: it will raise Attack if the foe's current Defense is lower than its current Special Defense stat; otherwise, it will raise Special Attack.
See