Hidden Power

This move deals damage with power and type determined by the user's IVs. Power is calculated using the formula `x * 40 / 63 + 30`, where `x` is derived by arranging bit 1 from the IVs for Special Defense, Special Attack, Speed, Defense, Attack, and HP. Power ranges between 30 and 70, with an average of 49.5. Type is determined by `y * 15 / 63`, where `y` is derived from bit 0 of the IVs. The result corresponds to the following types: 0 - fighting, 1 - flying, 2 - poison, 3 - ground, 4 - rock, 5 - bug, 6 - ghost, 7 - steel, 8 - fire, 9 - water, 10 - grass, 11 - electric, 12 - psychic, 13 - ice, 14 - dragon, 15 - dark. This move cannot be normal. Types have an equal 1/16 chance to be selected, except bug, fighting, and grass appear 5/64 of the time, and dark only 1/64 of the time.