Anti-Hero

You create a shadowy, negative copy of a humanoid target in range. The target must make a Charisma saving throw. If it fails, the copy appears in a space adjacent to the target.

The copy is a corporeal shadow creature with glowing red eyes that has the exact appearance of the target but only half its hit points. It takes on the equipped weapons, armor, spells, initiative order, and stats (except hit points) of the target, but not the target's items. Only the target has disadvantage on attack rolls made against the copy.

The spell lasts until the copy's hit points reach 0, 1 minute elapses, or concentration is lost.