Envoy's Greathorn is a Colossal Weapon in Elden Ring. The Envoy's Greathorn scales primarily with Strength and is a good Weapon for dealing Holy damage. 

Elden Ring Envoy's Greathorn Notes & Tips

• Weapon Skill: Great Oracular Bubble
• This weapon cannot be infused with Ashes of War
• Envoy's Greathorn can be upgraded by using Somber Smithing Stones
• Sell Value:  

   100

• Base drop rate is 2% (at 100 Discovery)
• Additionally, the Ash of War: Assassin's Gambit or the Concealing Veil (while crouched) can make the run easier. 
• NOTE: As of Patch 1.08, Colossal Weapons poise damage has been reduced. 
• 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.

Envoy's Greathorn 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.