Dungeons & Dragons 5e Element 133 Class Feature: Bone Breaker

Instead of relying on a series of strikes, some prefer to put all their strength behind a single but powerful blow. Haymakers emphasize power over everything else. If you haven't moved on your turn, you can use your bonus action to make a Haymaker punch. Your movement speed is reduced to 0 until the end of your turn.

This unarmed strike scores a critical hit on a roll of 18-20 on the d20. On a critical hit, the damage die of your unarmed strike is multiplied by 3. At Tier 8, while in this stance, you score critical hits with unarmed strikes on a 17-20 on the d20.

Additionally, whenever you hit a creature with the first strike made on your turn, you can forgo your second strike to deal additional damage equal to your unarmed strike die + your Strength modifier.

Devastating Punches

At Tier 6, when you hit a creature with a Haymaker, the target must succeed on a Constitution saving throw (DC 8 + your proficiency bonus + your Strength modifier) or be stunned until the start of your next turn and knocked prone.

Bone Breaker

At Tier 8, whenever you score a critical hit with a Haymaker, the bones inside the body of the target shatter. For the next hour, whenever you hit the creature is hit with a bludgeoning attack you deal additional 1d6 piercing damage to it.