Friends
- All Champions gain +[130] Armor Rating.

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 | 22,430 | 27,390 | 32,480 |
| 20 | 24,330 | 29,720 | 35,230 |
| 40 | 24,830 | 30,330 | 35,960 |
| 60 | 25,220 | 30,800 | 36,520 |
| 80 | 25,560 | 31,210 | 37,010 |
| 100 | 25,860 | 31,570 | 37,440 |
| 120 | 26,130 | 31,900 | 37,830 |
| 140 | 26,370 | 32,210 | 38,190 |
| 160 | 26,610 | 32,490 | 38,530 |
| 180 | 26,830 | 32,760 | 38,850 |
| 200 | 27,040 | 33,020 | 39,150 |
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.