Forum:Cyber Blader negation effect

I've had a problem while playing with a friend of mine. I've one Cyber Blader in my deck, and I comboed with my Ground Collpase and Safe Zone, which makes a pretty kick-ass combo.

My friend had summoned 3 monsters, and trying to activate the effect of one DarkWorld monster. When asked if a 3-monsters-Cyber Blader negated the effect of all monsters and magic/trap cards my enemie posses, even those that are in his/her hand my answer was: "I guess...".

So the question is: how does Cyber Blader 3rd effect works?

Does it also dennie magic/trap cards that've not been activated or effect of monsters like DarkWorld monsters? What about EffectVailer? Or the Monarchs?

Or does it only negate the effect of cards that are currently on the field.