What happens if I have no cards in my hand and use Manaphy's "Deep Sea Swirl" attack?
You always have a hand, even it you have zero cards in it. So you shuffle your deck and draw 5 cards.
Deep Sea Swirl



x2
Deep Sea SwirlShuffle your hand into your deck. Then, draw 7 cards.

Balance BindIf you and your opponent have the same number of Benched Pokémon, your opponent's Active Pokémon is now Paralyzed.
What happens if I have no cards in my hand and use Manaphy's "Deep Sea Swirl" attack?
You always have a hand, even it you have zero cards in it. So you shuffle your deck and draw 5 cards.