Stick fighting builds

[unbongwah]

Shillelagh lasts one minute per caster level or one minute per level?

Shillelagh and Ram's Might last 1 min per caster lvl, but many low-lvl buff spells have a minimum duration of 5 minutes, inc. these two.

[Mercureal]

Shillelagh lasts one minute per caster level or one minute per level?

If it's not a fixed duration it would have to based on caster level. I can't think of any spells (as opposed to SLAs) where duration or effect is based on Character level.