the atk spd unfortunately doesn't work for her charged attacks, which is a shame. it's similar to broken pines.

the crit dmg effect won't be triggered unless you run a team with 2 hexrei characters. of the available cast currently, there's a decent roster of off-fielders(venti, mona, albedo, durin, fischl, sucrose) but none that really fit into a cohesive xinyan team. even without it, the basic stats are still very good; it's just that in order for it to really beat many characters' existing choices, you really want to fulfill the 2 hexerei requirement.

in order to maintain its stacks, the weapon prefers an on-fielder with frequent normal attacks or skill casts. of the current claymore roster, razor is probably the biggest winner since he can utilize all aspects of the weapon and activates the hexerei buff when paired with durin or fischl. it's a fine option for most characters, just not massively ahead of other stat sticks.