Amber Prison
UNIQUE- Mangog: Start the fight with 1 Full Bar of Power.
- Loki: Gain 10% Attack Rating for each Unique Buff that is active.

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 | 19,880 | 24,270 | 28,790 |
| 20 | 21,980 | 26,840 | 31,830 |
| 40 | 22,820 | 27,870 | 33,050 |
| 60 | 23,530 | 28,730 | 34,070 |
| 80 | 24,160 | 29,500 | 34,980 |
| 100 | 24,740 | 30,200 | 35,820 |
| 120 | 25,280 | 30,860 | 36,600 |
| 140 | 25,780 | 31,480 | 37,330 |
| 160 | 26,260 | 32,070 | 38,030 |
| 180 | 26,730 | 32,630 | 38,700 |
| 200 | 27,180 | 33,180 | 39,350 |
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.