Atonement
UNIQUE- Hero Champions: +8% Attack Rating.
- Metal Champions: +10% Ability Accuracy.

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 | 19,640 | 23,970 | 28,440 |
| 20 | 21,790 | 26,590 | 31,550 |
| 40 | 22,610 | 27,600 | 32,740 |
| 60 | 23,290 | 28,440 | 33,730 |
| 80 | 23,910 | 29,180 | 34,620 |
| 100 | 24,470 | 29,870 | 35,430 |
| 120 | 24,990 | 30,510 | 36,190 |
| 140 | 25,490 | 31,120 | 36,910 |
| 160 | 25,970 | 31,690 | 37,600 |
| 180 | 26,420 | 32,240 | 38,250 |
| 200 | 26,850 | 32,780 | 38,880 |
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.