Claymore

Brutal: A brutal weapon is designed for maximum damage. When you score a critical hit with a brutal weapon against a creature, you can roll an additional die of the weapon's damage dice, adding it to the damage total.

Heavy: Creatures that are Small or Tiny have disadvantage on attack rolls with heavy weapons. A heavy weapon's size and bulk make it too large for a Small or Tiny creature to use effectively.

Two-Handed: This weapon requires two hands to use. This property is relevant only when you attack with the weapon, not when you simply hold it.

Proficiency: martial, greatsword Source: Grim Hollow: Player's Guide p. 131 (Third Party)