A challenging riddle- Not a one word answer!

A paradox unfeasible.
Preliminary to Epoch.
Appetency by one,
Divided by none.
Retained by numerous,
Competition gets humorous.
Juncture of need,
Secured in greed.
Lie in twain,
Without me, No Present.
Without him, No Conflict.
Menacing when worn,
Implementing gets Perilous.
Benevolent are levy.
Attraction to the ground.
Autonomy set designation.
Force bound,
Impossible to count,
With & Without sound.
Triumph we lead,
Different ways we plead.
Styles when casted ablaze