This spell creates phantom blade of the casters choice. The blade deals damage of the same scale as its real world counterpart. Choices of blades are dagger,short sword, long sword and rapier. If the caster is dealt more than 10 points of damage during an attack the caster must make a concentration saving throw, the blade vanishes on a fail. Damage increases by 1 comparative dice per spell  level (ie dagger get extra 1d4 per spell level etc)