For those people who have force fields, here is the rate at which they power up. It is not the rate at which they regenerate. Force fields don't regenerate, they just wear down until they're gone or they terminate. If, however, you have a burning desire to cast one in the middle of combat, then this table shows you how useful it would be.
| Max Force of the FF is less than | Powers up each round |
| 20 | 5 |
| 27 | 6 |
| 35 | 7 |
| 44 | 8 |
| 54 | 9 |
| 65 | 10 |
| 77 | 11 |
| 90 | 12 |
| 104 | 13 |
| 119 | 14 |
| 135 | 15 |
| 152 | 16 |
| 170 | 17 |