Bloodied Frenzy. While Bloodied, the berserker has Advantage on attack rolls and saving throws.
Multiattack. The berserker makes three attacks, using Greataxe or Javelin in any combination.
Greataxe. Melee Attack Roll: +7, reach 5 ft. Hit: 10 (1d12 + 4) Slashing damage, plus 10 (3d6) Thunder damage to the target or another creature within 5 feet of the target.
Javelin. Melee or Ranged Attack Roll: +7, reach 5 ft. or range 30/120 ft. Hit: 18 (4d6 + 4) Piercing damage, and the target's Speed decreases by 5 feet until the start of the berserker's next turn.
Frenzied Rush. Each ally within 30 feet of the berserker can take a Reaction to move up to half the ally's Speed without provoking Opportunity Attacks. The berserker can also move up to half its Speed without provoking Opportunity Attacks.