Rain of Arrows is a Skill in Elden Ring. Rain of Arrows is a regular skill that can be found in Ashes of War, it can be used on all Bows.

Elden Ring Rain of Arrows Guide, Notes & Tips

• This is an Ash of War Skill, associated with the Ash of War: Rain of Arrows.
• FP Cost: 20
• This Skill is not chargeable
• Can be cast even if you don't have 20 FP, as long as you have some
• The Arrow's Reach Talisman can massively increase the range at which the skill can lock on to a target. (For example, this skill paired with this talisman can be used to easily aggro the Giant Crow that can be locked on to from the Palace Approach Ledge-Road in Mohgwyn Palace. )
• If Rainbow Stone Arrow is fired using this weapon skill, the arrows' Rainbow Stone effect almost immediate disappears upon contact, although the arrows still produce the impact sound.