Trafalgar Law [Legacy of the Master]

[On Play] If the number of DON!! cards on your field is equal to or less than the number on your opponent's field, add up to 1 DON!! card from your DON!! deck and set it as active. Then, all of your [Donquixote Rosinante] and "Heart Pirates" type Characters gain +1000 power until the end of your opponent's next End Phase.