Silver's Whistle

As Silver's Whistle enters the battlefield, choose a creature type.
Creature spells you cast of the chosen type cost {1} less to cast.
At the beginning of your upkeep, look at the top
card of your library. If it's a creature card of the chosen type, you may reveal it and put it into your hand.

"Change in plan, lads! We move now!"
—John Silver