Valkyrie

Whirlwind Attack. The Valkyrie spins Around in a circle with its great-axe damaging all units within a 10FT radius any creature within 10Ft must make a DEX save equal to 10 + the Valkyries Strength and Dexterity modifier.

Rage

In battle, The Valkyrie fights with primal ferocity. on its turn can enter a rage as a bonus action.

While raging, it gains the following benefits if it is not wearing heavy armour:

• The Valkyrie have advantage on Strength checks and Strength saving throws.
• When the Valkyrie makes a melee weapon attack using Strength, it gains a bonus to the damage roll which is +4
• The Valkyrie has resistance to bludgeoning, piercing, and slashing damage.

The Valkyries rage lasts for 1 minute. It ends early if it is knocked unconscious or if its turn ends and it hasn't attacked a hostile creature since its last turn or taken damage since then. the Valkyrie can also end its rage on its turn as a bonus action.

Multi-Attack. The Valkyrie makes 3 Whirlwind Attacks or 3 Great-Axe/Great-sword attacks.

Great-Axe. Melee Weapon Attack:  +15 to hit, reach 10 ft., 1 target. Hit: 17 (1d12 + 10) slashing damage. 

Great-Sword. Melee Weapon Attack:  +15 to hit, reach 10 ft., 1 target. Hit: 18 (2d6 + 10) slashing damage.

Whirlwind. all targets within 10FT of the Valkyrie must make a DC 20 Dexterity saving throw or take 31 (3d12 + 10) slashing damage and be knocked prone.

Killer Instinct. as a reaction to taking damage the Valkyrie can make a melee weapon attack against a creature within 10FT of it