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 | 28,140 |
| 20 | 21,350 | 26,070 | 30,920 |
| 40 | 22,170 | 27,070 | 32,100 |
| 60 | 22,850 | 27,900 | 33,090 |
| 80 | 23,460 | 28,640 | 33,970 |
| 100 | 24,010 | 29,320 | 34,770 |
| 120 | 24,530 | 29,950 | 35,520 |
| 140 | 25,020 | 30,550 | 36,230 |
| 160 | 25,490 | 31,120 | 36,910 |
| 180 | 25,940 | 31,660 | 37,560 |
| 200 | 26,370 | 32,190 | 38,180 |
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.