Weaponizer

You can put this spell on any weapon of your choice, and it will do 1d6 extra damage per hit of your choice. 

Additional levels: For every level above 1st, an extra D6 will be added. 
For example 
2nd level: 2d6 extra damage per hit
3rd level: 3d6 extra damage per hit
Yes this works with extra attacks
Yes it works with ranged attacks