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 | 20,210 | 24,670 | 29,260 |
| 20 | 23,160 | 28,280 | 33,540 |
| 40 | 23,610 | 28,830 | 34,190 |
| 60 | 23,960 | 29,260 | 34,700 |
| 80 | 24,270 | 29,630 | 35,140 |
| 100 | 24,530 | 29,950 | 35,520 |
| 120 | 24,780 | 30,250 | 35,880 |
| 140 | 25,000 | 30,520 | 36,200 |
| 160 | 25,210 | 30,780 | 36,500 |
| 180 | 25,410 | 31,020 | 36,790 |
| 200 | 25,600 | 31,260 | 37,070 |
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.