This is a thread for players to find what each legendary weapon actually does. The wiki is pretty horrific, and before I knew all this, I looked for it and never found it. So here you go. Don’t bother posting what the stat boost legendaries do, they’re pretty self explanatory.
Drunkard’s blade: puts a stack of drunk on enemies with each hit
Lying Bastard Sword: looks like a sword, handles like an axe
Rage Hammer: deals 60 damage to structures with each hit
Riptide: breathe underwater while equipped
Jedias Greatsaber: hums and glows
Warspear of the Black Circle: uses less stamina but has less armor pen
Dagger of a thousand bites: less stamina usage on lights but more on heavies
The Watchblade: more durability
Predatory Blade: ~60-70 damage on light attacks but 1 dmg on heavies
Sword of Crom: 91 damage but drains all stamina in one swing
The Festering One: stacks poison with every hit
Glimmermoon: glows
Forgelight: glows
Akbitanian blades: more durability
Daggers of Nameless Days: same as Daggers of a Thousand Bites
Misha’s Bite: the same as Daggers of a thousand Bites
Other ones are either self explanatory, im too lazy, or I don’t know. 1h maces are a gray area for me, please add to this list if you know what any of the others do.