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 | 19,040 | 23,250 | 27,570 |
| 20 | 21,330 | 26,050 | 30,890 |
| 40 | 22,130 | 27,020 | 32,050 |
| 60 | 22,800 | 27,830 | 33,020 |
| 80 | 23,390 | 28,560 | 33,870 |
| 100 | 23,940 | 29,220 | 34,660 |
| 120 | 24,450 | 29,840 | 35,400 |
| 140 | 24,930 | 30,430 | 36,100 |
| 160 | 25,390 | 30,990 | 36,760 |
| 180 | 25,820 | 31,530 | 37,390 |
| 200 | 26,240 | 32,040 | 38,000 |
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.