Dirac (T) 









Anti-Matter
Gain 4.0% (10.0% at 5★) Crit Rate. After entry or unleashing weapon skills, host gains another 4.0% (10.0% at 5★) Crit Rate for 9s. This effect cannot stack.
Dirac (M) 









Path Integral
Ultimate/Burst ATKs deal 14.0% (26.0% at 5★) more Total DMG. During Burst mode, the host gains 14.0% (26.0% at 5★) Total DMG, and gain another 0.9% (1.5% at 5★) Total DMG per second after unleashing Ultimate or entering Burst Mode; stacks up to 9 times; lasts 9s, during which the effect cannot be triggered again.
Quantum Waltz set
2nd Quantization 2-pieces
If any 2 stigmata effects are active, gain 35.0% Physical DMG. When this effect is triggered, the durations of both stigmata effects are reset and extended to 14s.
Dirac Equation 3-pieces
If all 3 stigmata effects are active, Ultimate/Burst mode ATKs also apply Impair to non-impaired enemies on hit, lowering their DEF by 50.0% for 3s. When this effect is triggered, the durations of all 3 stigmata effects are reset and extended to 18s.
Dirac (Japanese: ディラック Dirakku) is a stigmata in Honkai Impact 3rd.