Say a player calls Magnezone's "Magnetic Draw" Poke-POWER, but then realizes they already have six or more cards in their hand. Does that mean his "Magnetic Draw" Poke-POWER is used up, or can he use it later in the turn since nothing happened?

Magnetic Draw says "you may draw cards until you have 6 cards in your hand"; if you have too many cards you cannot "draw zero" so the Magnetic Draw Poke-POWER is not used up.

Relevant cards