Jsk Combat Style:Great Weapon Combat

Great Weapon Combat Abilities
You gain the following benefits when you wield a weapon with the heavy property.
 * Cleaving Attack: When you reduce a creature to 0 hit points with a weapon attack, you can use your reaction to roll your combat style die, dealing weapon damage equal to the result to all creatures of your choice within 5 feet of the creature you killed.
 * Heavy Attack: As an Action, you can make one weapon attack against a creature within 5 feet of you. On a hit, you deal weapon damage as normal and the creature must succeed on a Strength saving throw against a DC equal to 10 + one roll of your combat style die, or be knocked prone.
 * Steady Attack: When you take the Attack action before moving, you can choose to reduce your speed to 0 to make your attacks more accurate. When you make an attack roll, you roll your combat style die and add the result to the roll.

Unknown
Prerequisite: 3rd Level

You

Brutal Impact
Prerequisite: 5th Level

When you score a critical hit with a heavy weapon, you can roll one additional damage die when calculating the additional damage of the critical hit.

Unknown
Prerequisite: 11th Level

You

Annihilate
Prerequisite: 17th Level

When you score a critical hit with a heavy weapon, you can roll your combat style die to determine an extra amount of dice you roll when determining the additional damage of the critical hit. For example, if you are wielding a greatsword and you score a critical hit, and you roll a 6 on your combat style die, the damage of your critical hit becomes 2d6 + Strength modifier + 2d6 (critical damage) + 6d6 (extra critical damage).

You can use this ability once, and you regain the use of it when you finish a long rest.