Echoed Weapon

Upon casting this spell, a translucent, spectral copy of your on-hand weapon floats in the space behind it, as if wielded by an unseen hand. For each on-hand attack made by your weapon, the attack is repeated by its copy a split second later, dealing an extra 1d4 force damage for each attack. The spell must be cast before attacking for it to take effect, and uses your attack primary attack roll.