Rivers of Blood is a Katana in Elden Ring. The Rivers of Blood scales primarily with Strength, Dexterity, and Arcane and is a good Weapon for mid-range combat and it is capable of inflicting both Slash and Pierce attacks. The scaling was fixed in an update

Elden Ring Rivers of Blood Notes & Tips

• Weapon Skill: Corpse Piler
• Cannot be infused with Ashes of War
• Cannot be enchanted with Magic nor boosted by Consumables.
• Causes Blood loss Buildup: 

   (50)

• Despite the D scaling in Arcane, the damage gain is comparable to Dex but splits more into Fire. In addition, more arcane increases bleed build up. In summary, this weapon is reasonably viable on a pure Dex or pure Arcane build.
• Sell Value:  

   500

• Corpse Piler has the same animation as Double Slash, but longer range and adds more Bleed Build Up than is listed on the weapon
• Corpse Piler deals both Physical and Fire Damage
• Rivers of Blood is most likely inspired by Muramasa, a swordsmith in Japan from the 16th century. Legend says that Muramasa's swords were cursed and demonic in power, causing bloodlust to those who wield it.
• NOTE: As of Patch 1.08, Katanas poise damage has been reduced only on PVP.
• NOTE: As of Patch 1.09, the scaling values of this weapon were changed. Please refer to the Upgrades Table of this weapon below.
• Other notes and player tips go here.

Rivers of Blood PVP Poise Damage Values in Elden Ring

Patch 1.10 adjusted PVP Poise Damage of all Weapons including some Spells and Incantations. Please take note that these adjustments are exclusive to PVP.