Gun Runners' Arsenal

At the beginning of your first main phase, reveal
the top three cards of your library. You may cast a
legendary equipment artifact from among them by
paying {1} and an amount of life equal to its mana
value. Otherwise, you may put it into your hand.
Then, put the remaining cards in your graveyard or
at the bottom of your library in a random order.
Legendary equipment you control has "equipped
creature gets +1/+0 for each legendary equipment
you control."