You deflect incoming projectiles with Spirit Blade, sending a shockwave of energy back at the attacker.
Spirit Blade unlock
Defending Blade is a Mage ability from the Knight-Enchanter Specialization in Dragon Age: Inquisition.
About Defending Blade
Defending Blade is an upgrade to Spirit Blade which deflects incoming projectiles and returns a shockwave of energy back to your attacker.
Notes and Tips
Knight-Enchanter Ability Tree