What Am I?

I weave a tale as I go
Yet I have no use for words
My tail the ever-binding force
From all the proles to the lords

I can supply you with health
Or drain you of life force
Just choose a gradient
From very fine to coarse

If you’re not too careful
I’ll be quick to insult
I can leave you branded
Or bound to a cult

Mind me with precision
And I won’t lead you astray
Just remember colloquially
I’m impossible to find in hay