Holy Ground is a Skill in Elden Ring. Holy Ground is a regular skill that can be found in Ashes of War, it can be used on all Shields. Updated to Patch 1.07.

Elden Ring Holy Ground Guide, Notes & Tips

• This is an Ash of War Skill, associated with the Ash of War: Holy Ground.
• FP Cost: 30 on use.
• This Skill not Chargeable
• Upon activation, the user raises their shield above their head, glowing with holy energy before releasing it, creating a medium-sized circle on the ground that provides some buffs if you stand in it. 
  
  • The animation takes 4 seconds to perform, from start to finish. However, the user can perform another action after 3 seconds.
    
    
• The buff provides a 20% boost to Damage negation (absorptions), and a HP regen effect restoring 600 HP over the duration (around 17 HP/second).
  • This buff lasts for 35 seconds.
  • This buff affects all allied entities, like player phantoms, friendly NPCs, and of course the user.
    
    
• If used without FP:
  • A circle is not created on the ground, and no buff is provided.
  • User still has to go through the starting 3 seconds of the animation before performing another action.
• Note: This Skill was changed with Patch 1.07 as follows: HP recovery amount has been increased.