Path of the Savage

The Path of the Savage is a road plagued by cruelty and temptation. While one obtains great strength and a near inexorable fury when becoming a savage, the foul-natured spirits which normally stay hidden come to you with promises of more power. They feed off your strength and aid you in combat, yet this often leads the savage to become as impulsive and nomadic as the spirits that guide them. Some savages are able to cope with the spirits and find a band of their own, but many will say that the savage is a threat even without the support of others.

Based on the "Fire Emblem Homebrew Compendium" by Goobs

Death Blow

Starting when you choose this path at 3rd level, malign spirits guide your strikes, resulting in more power behind your precise attacks. You can roll an additional weapon damage die when determining the extra damage for a critical hit with a melee attack. Additionally, your damage modifiers are doubled when you score a critical hit.

Havoc Bringer

Beginning at 6th level, your rampage cannot easily be quelled. For the duration of your rage, you are immune to the grappled and paralyzed conditions and you ignore difficult terrain. Additionally, any falling damage you take while raging is reduced by a number equal to your Strength score plus your Constitution score.

Preserve the Blade

At 10th level, you are imbued with the ability to rectify any damage inflicted on ya magical weapon. You learn the Mending cantrip. When you use this cantrip on a magic weapon which has broken, you can attempt to restore its magical power. When you cast Mending in this manner, you must make a Charisma Check against the magic weapon’s restoration DC (10 for a common magic weapon, 12 for uncommon, 14 for rare, 17 for very rare, 20 for legendary). On a success, the weapon’s magic properties are restored. On a failure, you cannot attempt to restore the magic weapon in this manner for 1 week. If you fail to restore the magic weapon three times, any further attempt that you make fails.

Counter

Starting at 14th level, your enemies will suffer alongside you. When a creature attempts to hit you with a melee weapon, you can use your reaction to reduce your Armor Class to 10. When you do so, any damage dealt to you by that attack is also dealt that creature as Necrotic damage. This damage ignores damage resistances and immunities for the attacking creature.