Tenser's Giant Strength (Alteration)

Level: 4
Range: Touch
Duration:  3 turns/level
Components: V, S, M
Casting Time: 1 turn
Saving Throw: None
Area of Effect: Person touched

This improvement of the
strength spell empowers the recipient with superhuman
physical strength. The strength gained depends on the
experience level of the caster, as shown below.

Mage's Level Increase Strength To
7th 16
9th 17
12th 18/01
13th 18/75
14th 18/90
15th 18/00
15th+ 19

Those with strength already greater than the spell’s effect
get 1 more point of strength. Neither permanency nor a
wish can make the strength permanent. 

MC: A bit of hair from a giant or a titan.