Are you able to make opportunity attacks if you're dazed and have the feat Persistent Threat?
Persistent Threat - While you are dazed, you can still flank enemies, and you can take an opportunity action if you haven't taken one since the start of your last turn.
Rain of Steel - Any enemy that starts its turn adjacent to you takes 1[W] damage, as long as you are able to make opportunity attacks.
That said, Rain of Steel then works while you're dazed?