Ranger: Optional Class Features

What are these?

The following list are class features that your dm may either allow you to have in addition to the features you gain from your class or they are options that might replace existing class features

Martial Versatility

4th-level ranger feature
Whenever you reach a level in this class that grants the Ability Score Improvement feature, you can replace a fighting style you know with another fighting style available to rangers. This replacement represent a shift of focus in your martial practice.

Nature's Veil

10th-level ranger feature, which replaces the Hide in Plain Sight feature

You draw on the powers of nature to hide yourself from view briefly. As a bonus action, you can magically become invisible, along with any equipment you are wearing or carrying, until the start of your next turn. 
You can use this feature a number of times equal to your proficiency bonus, and you regain all expended uses when you finish a long rest.