Elven Breachhouse

When Elven Breachhouse enters the battlefield,
look at the top four cards of your library. You
may reveal a creature card from among them
and put it into your hand. Put the rest on the
bottom of your library in a random order.
At the beginning of the end step, if you are the
only one who controls a creature, create a
Treasure token. (It's an artifact with "Tap,
Sacrifice this artifact: Add one mana of any color.")