A creature's movement (abbreviated as SNK) is a measure of how stealthy it is in both a physical and metaphysical sense. By default, a creature's SNK is determined by its SIZE, but there are various abilities that set it to different values.
SNK by SIZE
If there's no ability that sets a creature's SNK, it is determined by its SIZE as follows.
| SIZE | SNK |
|---|---|
| 20+ | -4 |
| 10 - 19 | -3 |
| 6 - 9 | -2 |
| 4 - 5 | -1 |
| 3 | 0 |
| 2 | +1 |
| 1 | +2 |
| ½ | +3 |
| ¼ | +4 |