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 | 19,430 | 23,720 | 28,130 |
| 20 | 21,690 | 26,490 | 31,410 |
| 40 | 22,510 | 27,480 | 32,590 |
| 60 | 23,180 | 28,320 | 33,570 |
| 80 | 23,790 | 29,060 | 34,450 |
| 100 | 24,350 | 29,730 | 35,260 |
| 120 | 24,870 | 30,370 | 36,010 |
| 140 | 25,360 | 30,970 | 36,720 |
| 160 | 25,820 | 31,540 | 37,390 |
| 180 | 26,270 | 32,080 | 38,040 |
| 200 | 26,700 | 32,610 | 38,660 |
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.