What is a good item for my weavile?

Question

My Weavile knows ice punch, night slash, dig, and aerial ace. He has an adamant nature and has ev trained attack and speed. His defenses are to weak for a fighting type move defensive berry and I don't want a focus sash. I was thinking maybe something to boost his power.

Answer 1

A Razor Claw (raises critical hit chance) would be good if you want to take advantage of night slash. You can get a critical hit from a STAB night slash, which would do a ton of damage coming off of Weavile's high attack. A life orb could boost his power through the roof, at the cost of health every turn. A choice band or scarf can raise his attack and speed respectively, but locks him into one move.

Answer 2

A soothe bell or an amulet coin. a soothe bell because it calms the holder and makes it friendlier or an amulet coin because it doubles a battles prize money if the pokemon holding the amulet coin joins in.