Use of this spell increases the Strength of the individual touched by a number of points that depend on the character's class.
| Class | Strength Gain |
| Samurai, sohei, kensai, bushi, & barbarians | 1d8 points |
| Shukenja and yakuza | 1d6 points |
| Wu jen and monks | 1d4 points |
Ninja gain Strength as their other class.
Samurai, kensai, bushi, and barbarians gain strength in 10% increments upon reaching 18 Strength.
The material component is a piece of fur of a strong animal such as a bull or ape.
Notes: Common for oriental priests; otherwise, very rare.