For the ashes of War, obviously you can only get one seppuku per play through, so one of Elden Ring Runes them wants to have seppuku, and the other one bloody slash, a lot of people overlook bloody slash, because you get it, so early on in your playthrough, it is actually dropped by the Godric Knight when you defeat him at the top of Fort height, and because this scales nearly infinitely with your weapon upgrades, and your Arcane stat, it is actually insanely devastating in the end game.

Of course, seppuku is going to increase your attack power, immediately cause blood loss which will trigger many other parts of the build, and it will improve your ability to inflict blood loss, this actually coincides hand in hand with making bloody slash deal even more damage, and seppuku is found on the frozen lake east of the freezing lakesite of Grace, and it's dropped just here by an invisible Scarab.

Elden Ring 1.09 Best Build: Armour & Talismans

Arms Veteran's Gauntlets & Veteran's Gauntlets

Now to make these blades along with blood the slash deal, the maximum amount of damage, you will want the following armor and talismans.

The White mask

The white mask of vary which you will be awarded near the end of various questline, once you defeat all three of the nameless white masks, and this will raise your attack power when there is blood loss nearby, and there is always going to be blood loss nearby pair, this with the Lord of cheap Elden Ring Items Bloods exaltation which does the exact same thing.