Critical Chance is a percent dictating how often your Basic Attacks can Critical, Critical hits deal 1.75 times the damage of a normal Basic Attack. The artifact Joe Chill's Revolver increases the amount of damage a critical hit deals causing it to deal 2.25 times the damage as a Basic Attack, it is the only artifact with this trait. Below is a list of all artifacts giving Critical Chance, the amount given at max Tier, and the cost at max Tier.