Scroll of Spiritual Weapon

The text on this worn-down scroll appears unintelligible, but they seem to be for some sort of spell.
You create a floating, spectral weapon within
range that lasts for the duration or until you cast
this spell again. When you cast the spell, you can
make a melee spell attack against a creature within
5 feet of the weapon. On a hit, the target takes
force damage equal to 1d8 + your spellcasting
ability modifier. As a bonus action on your turn,
you can move the weapon up to 20 feet and
repe