Resistance Penetration
When calculating the damage, the defender's Resistance is calculated at a lower value.
As a stat that counteracts Resistance, Resistance Penetration acts on the defender's effective Resistance in the damage calculation process.
Upon inflicting damage, if the attacker has Resistance Penetration of a certain type, the defender's Resistance will be reduced accordingly by the value of the Resistance Penetration when calculating the damage.
Resistance Penetration does not change the actual value of the defender's Resistance.
Resistance Penetration takes effect on all forms of damage (Hit, DoT, Secondary, Reflect).