Archetype of Courage

[Anoobass]

{archetype of courage}

My opponents' creatures lose and can't gain first strike, does this affect the first strike damage step if my opponents' have a creature with double strike?  Or are double strike creatures unaffected?

[Gorzo]

Double strike is unaffected by the archetype.

RESOLVED

[Anoobass]

Good thing double strike is hard to come by