If this card is added from the Deck or GY to your hand by an effect of a WATER monster: You can reveal this card; look at your opponent's hand.

If this card is Special Summoned: You can send the top card of your Deck to the GY, then target 1 Level 4 or lower WATER monster in your GY, except "Deep Sea Artisan"; Special Summon it, but negate its effects.