X, Captain's Most Trustworthy

Whenever another Pirate enters the battlefield
under your control, you may pay {b} and 1 life. If
you do, that Pirate explores. (Reveal the top card
of your library. Put that card into your hand if it's a
land. Otherwise, put a +1/+1 counter on the creature,
then put the card back or put it into your graveyard.)
{2}{u}{b}: Return X, Captain's Most Trustworthy
from your graveyard to the battlefield. It becomes
an enchantment. Shuffle your graveyard into
your library.