Blood fang Berserker

Frenzy (Recharge 5–6). When the Bloodfang Berserker enters combat, it can enter a berserk frenzy. While in frenzy, it gains the following benefits for 1 minute:

• Advantage on Strength checks and Strength saving throws.
• When it makes a melee weapon attack using Strength, it gains a +2 bonus to the damage roll.
• It can make one additional melee weapon attack as a bonus action on each of its turns.
• At the end of each of its turns while in frenzy, it takes 5 (1d10) psychic damage.

Relentless Endurance. When the Blood fang Berserker is reduced to 0 hit points but not killed outright, it can drop to 1 hit point instead. It can use this feature once per long rest.

Multiattack. The Bloodfang Berserker makes two attacks with its greataxes.

Greataxe. Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 15 (2d12 + 4) slashing damage.

Howling Charge (Recharge 5–6). The Blood fang Berserker lets out a terrifying howl and charges up to 30 feet in a straight line. Each creature in its path must succeed on a DC 15 Dexterity saving throw or take 18 (4d8) thunder damage and be knocked prone.

Berserker Fury. The Blood fang Berserker can enter a fury state as a bonus action, gaining advantage on melee attack rolls until the start of its next turn.

Unyielding Defense. When hit by an attack, the Blood fang Berserker can add +2 to its AC against that attack.