Frenzy Tattoo

Alter: While this tattoo is applied on your skin, when you roll a 19 or 20 on a weapon attack roll (before modifiers are added), you can make one attack with the same weapon as a bonus action on subsequent turns for the next minute.

Attunement: Yes
Materials/cost: 2070gp
Placement: Arms
Rarity: Rare
Produced by a special needle, this magic tattoo symbolizes the chaos of chance.

This tattoo was originally conceived for experienced frontline knights as a means to magically rain consecutive blows down upon their opponents and overwhelm them early in a battle. However, its price would later be too much for armies to realistically purchase for more than just a handful of their soldiers. The design would eventually find a place with adventurers looking to inflict even more pain upon unsuspecting monsters they came across on their travels.