Vürdmeisters are the users of the Vir. A mysterious power used to increase the power of spells.   

When you first get the Vir implanted you gain one Vir point.  Regain all points when Finishing a long rest

When you cast a spell as a bonus action you can expend one point to empower your spell in one of three ways.

1.increase the level of a spell by 2 for spells under level 5 or 1 for spells level 6 and over.

2.Automatically cause a save type spell to succeed. 

3.Gain +5 to attack when using a target type spell