Gum-Gum Golden Rifle (OP15-116) - Adventure on Kami's Island Foil

[Main] If your Leader has the {Straw Hat Crew} type, trash 1 card from the top of your Life cards. Then, add up to 1 card from the top of your deck to the top of your Life cards and trash 1 card from your hand.
[Counter] Your Leader gains +4000 power during this battle.