Mordecai, Trained Hunter

Gone Vaulthunting
When Mordecai, Trained Hunter enters the battlefield,
look at the top 5 cards of your library,
you may reveal a land and put it into your hand,
if this land was a vault, put it instead onto the battlefield tapped.
{1},{t} create a 2/2 bloodwing with flying and
haste until the end of your turn,
add 1 ammo counter to equipped gun