Well, I searched and couldn't find a place this question was asked before, though I'm suprised it hasn't been.

Does Kycoo the Ghost Destroyer negate D.D. Assailant's effect?

Let's say Kycoo has attacked and destroyed DDA. DDA is in the graveyard at the time of activation, and its effect would remove itself from the graveyard. Kycoo stops cards from being removed from the graveyard by my opponent's card effects. So D.D. Assailant would be negated, correct?

This came up as a question in a recent duel.

Im pretty sure that once DDA is destroyed its effect is activated which means right away Kycoo would be removed from play as long as the DDA.

They dont go to the graveyard, therefore, are removed from play.

-Shane

Ah, I see where the problem lies.

"D.D. Assailant"'s effect activates and resolves while it is still on the field (although at this point, it is 'considered to be destroyed'), so Kycoo's effect doesn't stop it from resolving properly at all.

What has been stated by the last three is true, and probably the most up to date answer you can get. Since the question is answered, I will be closing the thread.

Lucien, if you have other questions about the topic, feel free to contact me to open the thread back up.