Deface (Combat, Critical)

Your critical hits cut open your foe’s best feature, and leave it less confident of its abilities.

Benefit: When you score a critical hit with an attack, you can forgo dealing extra damage to instead deal an additional 1d4 Charisma damage. Weapons with a critical multiplier greater than x2 deal +1 ability damage for every additional multiple (thus a Deface delivered with a greataxe deals 1d4+1 Charisma damage).

Special: You can apply the effects of only one critical feat to a given critical hit unless you possess Critical Mastery.