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 | 19,870 | 24,260 | 28,770 |
| 20 | 22,100 | 26,980 | 32,000 |
| 40 | 22,930 | 28,000 | 33,210 |
| 60 | 23,630 | 28,850 | 34,220 |
| 80 | 24,250 | 29,600 | 35,120 |
| 100 | 24,820 | 30,300 | 35,940 |
| 120 | 25,350 | 30,950 | 36,710 |
| 140 | 25,850 | 31,560 | 37,430 |
| 160 | 26,330 | 32,140 | 38,120 |
| 180 | 26,790 | 32,700 | 38,790 |
| 200 | 27,220 | 33,240 | 39,420 |
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.