Through and Through is a Skill in Elden Ring. Through and Through is a regular skill available when you equip the Greatbow.

Elden Ring Through and Through Guide, Notes & Tips

• This is an Ash of War Skill, associated with the Ash of War: Through and Through.
• FP Cost: 0 (stance), 9 per shot.
• This Skill is not Chargeable
• Holding the Skill button will prepare the user into a stance, preparing the bow. When inputting light or heavy attacks, the user quickly shoots the respective arrow from their slots, consuming FP (and stamina while in combat).
  • When the stance is being held, stamina regen is reduced by approximately 80%.
• The arrow fired with this skill will pass through all enemies in its path.
  • This is especially effective when used in tight spaces, or enemies are lined up in formation.
    
    
• If used without FP:
  • Shots receive a damage penalty
  • Doesn't go through enemies.