Your exposure to the Shadowfell's magic and the Feywild's magic both has changed you as the primal power of Planar Echoes resonates with your feral nature.

While raging, you gain the following benefits:

• Magic infuses one weapon of your choice that you are holding. Until your rage ends, the weapon’s damage type changes to force, and it gains the light and thrown properties, with a normal range of 20 feet and a long range of 60 feet. If the weapon leaves your hand, the weapon reappears in your hand at the end of the current turn. If you are not holding a weapon when you enter your rage, this benefit applies to your unarmed strikes.
• Whenever a creature hits you with an attack roll before your rage ends, that creature takes 1d6 force damage, as magic lashes out in retribution.
• Until your rage ends, you are surrounded by multi­colored, protective lights; you gain a +1 bonus to AC, and while within 10 feet of you, your allies gain the same bonus.
• Flowers and vines temporarily grow around you; until your rage ends, the ground within 15 feet of you is difficult terrain for your enemies.

While raging, you can produce any one of the following magical effects as a bonus action on your turn:

• Shadowy tendrils lash around you. Each creature of your choice that you can see within 30 feet of you must succeed on a Constitution saving throw or take 1d12 necrotic damage. You also gain 1d12 temporary hit points.
• You teleport up to 30 feet to an unoccupied space you can see.
• An intangible spirit, which looks like a pixie, appears within 5 feet of one creature of your choice that you can see within 30 feet of you. At the end of the current turn, the spirit explodes, and each creature within 5 feet of it must succeed on a Dexterity saving throw or take 1d6 force damage.
• A bolt of light shoots from your chest. Another creature of your choice that you can see within 30 feet of you must succeed on a Constitution saving throw or take 1d6 radiant damage and be blinded until the start of your next turn.

Finally, the unique blend of experiences which has exposed to you both the malaise of the Shadowfell and the elation of the Feywild has made you invulnerable to effects that would otherwise force you to feel a particular way. You have immunity to the charmed condition and the frightened condition.