You've learned Bash! To use this ability, hold Y near lanterns or enemy projectiles, then aim in the direction you'd like to leap! Projectiles will be redirected in the opposite direction! - Ori and the Blind Forest
Overview
Bash is the fifth skill Ori learns. Taught by the light of Reem, Bash allows Ori to launch themself off an enemy projectile or a lantern. Projectiles will be launched in the opposite direction, and can be used to break barriers blocking secret places. Using Bash also stops time for a short period, giving the player a few seconds to decide which way he or she wants Ori to leap.
Ori learns this skill in the Ginso Tree.