Pearl on the Ocean Floor

Flash

Blue spells you control cost {3} less to cast.
When Pearl on the Ocean Floor enters the battle field, Scry X, where X is the amount of islands you control. You may choose cards from among the cards looked at with mana value 5 or less, and put them into your hand.
{u}{u}{u}{u}{u}, Exile Pearl on the Ocean Floor. Return it to the battlefield tapped.