Barbarian: 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

Primal Knowledge

3rd-level barbarian feature
When you reach 3rd level and again at 10th level, you gain proficiency in one skill of your choice from the list of skills available to barbarians at 1st level.

Instinctive Pounce

7th-level barbarian feature
As part of the bonus action you take to enter your rage, you can move up to half your speed.