Buffing Abilities Magically

[Alex Koponen]

What are the best ways to buff up one's abilities magically? In other
words, what spells would one use to boost their S, St, D, et cetera beyond
current and maximum ability? What are the maximums allowable via magic?

I note that Permanent Magics - Enhancement works for Natural Magic items
like:
Betony - +10 S for 24 hours. Enhanced it is +20 S for 72 hours.
Bezoar - +5 S while worn.