Polearms are unique in two significant ways. First, they're all two-handed weapons, so they can't be used with a shield. Second, they are (mostly) capable of dealing all three types of damage ...
Weapons like Royal Spear, Deathmatch, and White Tassel offer unique advantages and boosts that cater to Arlecchino's skills. Consider factors like base ATK, secondary stats like Crit Rate ...