Birthright
UNIQUE- All Mutants and X-Men except Professor X: +25% Special Attack Damage for each Cerebro Charge. Max 100%.

Every sig anchor × rank at A0. Sig levels in between interpolate smoothly (PCHIP) and round to the nearest 10 BHR — matching the in-game display.
| Sig | R3 | R4 | R5 |
|---|---|---|---|
| 0 | 19,990 | 24,420 | 28,950 |
| 20 | 22,040 | 26,920 | 31,910 |
| 40 | 22,870 | 27,940 | 33,120 |
| 60 | 23,570 | 28,790 | 34,130 |
| 80 | 24,200 | 29,560 | 35,040 |
| 100 | 24,760 | 30,250 | 35,860 |
| 120 | 25,300 | 30,910 | 36,640 |
| 140 | 25,810 | 31,520 | 37,370 |
| 160 | 26,290 | 32,110 | 38,070 |
| 180 | 26,750 | 32,670 | 38,730 |
| 200 | 27,190 | 33,210 | 39,370 |
BHR at each signature level by rank (non-ascendable — A0 only). The curve is concave — sig 0 → 100 captures roughly two-thirds of the gain from sig 0 → 200.