Additional Damage Reduction

Additional Damage Reduction (also known as DoT Mitigation) is an effect that reduces damage taken from Additional Damage. DoT mitigation is passively capped at 50% and will not go higher if attempting to do so. With 100% DoT mitigation through buffs, a unit will receive 1 damage from Additional Damage rather than completely negating it.

Rules with Mitigation Stacking

 * All types of passive mitigation stack additively with each other, but passive mitigation caps at 50%.
 * Conditional mitigation counts as passive mitigation.
 * Using Sacred Purpose Lukroar and Pious Emperor Alza Masta as Squad Leaders while fulfilling Alza Masta’s conditions for 20% damage reduction will result in 50% passive mitigation; however, using Celestial Shield on a unit will not increase its passive mitigation due to achieving the 50% passive mitigation cap.
 * All types of buffed mitigation stack multiplicatively with each other. There is no cap to buffed mitigation.
 * Using Umbra Halcyon Magress’s 50% damage reduction buff with Infinity Starsage Zeruiah’s 10% elemental mitigation will result in 55% buffed mitigation.
 * Passive mitigation and buffed mitigation are additive with each other.
 * BB/SBB is considered one category and thus, mitigation buffs coming from BB and SBB will not stack with each other.
 * This can stack with UBB and DBB mitigation, however.
 * Elemental Mitigation cannot be pierced.

Mitigation Formula
Total Mitigation = Passive Mitigation + Buffed Mitigation Passive Mitigation = Leader Skill 1 + Leader Skill 2 + Extra Skill + Sphere + SP Enhancement Buffed Mitigation = 1.0 - (1.0 * (1.0 - BB/SBB) * (1.0 - UBB) * (1.0 - DBB))

Examples of Stacking

 * Loving Bonds Wintia’s 15% DoT mitigation on her SBB and Bright Star Persenet’s 20% DoT mitigation on her BB will not stack with each other. Whichever unit reaches to the enemy target last will have their Spark buff active.
 * Time-Weaver Elaina’s 50% passive DoT mitigation on her SP option and Bright Star Persenet’s 20% DoT mitigation on her BB will stack with each other, with Time-Weaver Elaina having a total of 70% DoT mitigation.