Planar Influence: Chaos, Ysgard

Your time channeling cosmic forces has caused your body to be tuned to the energies of a single Outer Plane. Choose an Outer Plane that matches at least one alignment with your Scion of the Outer Planes feat. 
(These feats are based on Planar Influences found in Morte’s Planar Parade. As such, some have been edited to better match being used by PCs)

A creature influenced by Ysgard becomes hearty and muscular. Its scars always appear fresh. When the creature senses danger, it can’t help but express joy. You also gain one or more of following traits of the DMs choice:

Warrior’s Wrath. You has advantage on melee attack rolls against any target missing at least half its hit points.

Ysgardian Stand. If you have the prone condition at the start of your turn, you can, at that time, end the prone condition on yourself and stand up without expending any movement. You can’t use this trait while you have the incapacitated condition. You can use this a number of times equal to your proficiency bonus per long rest.

In addition, if you use any of these features and your alignment is not Chaotic Neutral or Chaotic Good, make a DC 5 Wisdom saving throw. On a failure, roll a d20. An odd value changes your alignment to Chaotic Neutral, an even value changes it to Chaotic Good. A short or long rest or a dispel evil and good spell restores your original alignment.