Vicious Weapon

A  is a magic weapon that deals additional damage on a natural 20 attack roll.

Description
All vicious weapons, upon a natural 20 attack roll, deal an additional 7 damage of the weapon's damage type to the target of the attack.

History
Opal purchased a vicious whip at Gilmore's Glorious Goods for 600 gold, though the asking price had been 1000 gold. She wielded it several times in combat, notably using it to wrap around the crocodile the party encountered in an attempt to flip the crocodile onto its back.