Weapon of Wounding

This spell can infuse magic and brutality into an ordinary weapon, giving it power and might beyond what any may have dreamed of. You may only infuse a weapon with this power once per long rest.

Touch a nonmagical weapon to get the following benefits:

You get a + (Spell Modifier) bonus to attack rolls made with this weapon. You get a critical hit on a 19-20, and you get to roll 3 times the weapon dice instead of two times. 

You also can cast spells from the sword. The sword has 1d8 + Your spellcasting ability modifier charges, and if you use all of them, the spell ends.

This is your spell list:

Shield, Magic Missle, (1 charge)

Invisibility, Pass without Trace (2 charges)

Fireball, Haste (3 charges)

Counterspell, Dispel Magic (5 charges)