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 | 19,680 | 24,040 | 28,500 |
| 20 | 21,710 | 26,510 | 31,440 |
| 40 | 22,560 | 27,550 | 32,670 |
| 60 | 23,270 | 28,410 | 33,700 |
| 80 | 23,900 | 29,180 | 34,610 |
| 100 | 24,480 | 29,890 | 35,450 |
| 120 | 25,020 | 30,550 | 36,230 |
| 140 | 25,530 | 31,180 | 36,970 |
| 160 | 26,020 | 31,770 | 37,680 |
| 180 | 26,480 | 32,340 | 38,350 |
| 200 | 26,930 | 32,890 | 39,000 |
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.