*snip* [The bane weapon] applies on attack not on hit. that's what makes it broken, because you neither have a chance nor a resource involved.
Ah yep that's a bit overpowered. It should apply on hit (or maybe only on a miss; in an "equalizing the playing field" effect?) and with a saving throw allowed.
Or apply only on a crit with no saving throw.
(I mean, there's also a X charges/day option that you could spend a charge to apply bane on a successful hit, but given how Larian doesn't want popup windows during combat this implementation is unlikely. And I don't want a specific "attack and apply bane if hit" button on the taskbar; it's already cluttered enough)
