Quote Originally Posted by Unregistered View Post
For discussion's sake I copied over the buffs of each relic weapon from the discord. I've been thinking of getting either Andromeda or Hercules' attack one.

Arthur (burst->35% atk up to self 3t)
Atk(sword): nuke CD 6->5t
HP(axe): 20->2x20% atk buff

Joan (burst->40% dmg cut to self 1t)
Atk(sword): DA/regen buff CD 8->6t
HP(lance): 40->40+20% dmg cut

Andromeda (burst->50% heal limit break to self 3t)
Atk(staff): 20->2x20% def buff
HP(lance): heal->heal+regen(2x350)

Solomon (burst->50% ability dmg buff to party 6t)
Atk(glaive): single target->AoE 4.5-5x nuke
HP(staff): stackable ability buff CD 3->2t

Siegfried (burst->additional hit after burst)
Atk(glavie): rage nuke dmg up (no data)
HP(hammer): mode gauge deplete rate->additional atk buff (no data)

Mordred (burst->combo atk down)
Atk(sword): mode gauge decrease effect to outrage
HP(glaive): removes a buff with outrage

d'Artagnan (burst->combo atk buff to self 3t)
Atk(gun1): Snatch 3rd's snatch attempts 3->4
HP(gun2): Sniper Shot gets additional 10% atk/def debuff (D Frame)

Hercules (burst->25% eido/wep frame def debuff)
Atk(axe): 3rd ability gets additional 30BG up
HP(bow): nuke cap 700k->1m, 50->75% bonus from each buff

Morgan (burst->applies dizzy)
Atk(staff): turns rampage buff into party-wide 2x multiplier
HP(arcane): target->target+self guaranteed TA

Shingen (burst->30BG up)
Atk(lance): 20->35 BG from first ability
HP(bow): 200->500% burst buff (translates to 40->100% bonus dmg to burst for SSR himes)
Was lazy to read the whole thread (just stumbled upon it), but that's my hero weapon summary in which I made a few corrections meanwhile (corrected it in the quoting).
As an explanation to Shingen burst buff note, as you may know, each rarity has its own burst multiplier & burst buff is additional with that. So while the damage gain in number stays the same, the relative gain (expressed in %) varies depending on the already existing multiplier.

There's also an introduction part which is probably useful for those new to hero weapon stuff or for people with lacking knowledge on hero weapons. Gonna add it here:

Each hero has 2 types of weapon: atk & hp. Atk will give you 30% elemental atk bonus of the corresponding element at SL20 and hp gives 30% hp.
Every hero weapon has a 2nd, hero specific effect that will boost one of their abilities.
Note that these effects only work with the corresponding hero and only if equipped as main weapon.
Atk & hp weapons for the same hero share the same burst effect.
Note that the burst effects described below are only for MLB weapons: at 0* they won't have any kind of burst effect, then the effect will increase as you proceed with LB.