Brought pet auto buff. . .

Not really o.o 'Cause its duration is quite long.
I was thinking of other buffs that don't last that long & need recasting every 1-2 min.

Those are the buffs that are usually pretty important to begin with and shouldn't be used with auto-buff because they need to be up constantly, generally have a low cast time, and auto-buff recasts a few seconds after it disappears making it unreliable. MW is just a % buff with a pretty long ass cast time. Might as well make the most of what you've got.