Forum:Stardust AM / Monster Reborn

I have a few quick questions.

1. Can Stardust Assault Mode negate the activation of a card like "Wall of Illusion?" Or is it a no because "Wall of Illusion" doesn't start a chain or doesn't activate?

2. I was told by someone at a local tourney that I couldn't use "Monster Reborn" on my monsters that were negate summoned by Royal Oppression. ex: I synchro summon Stardust Dragon, he chains Royal Oppression. Doesn't my Stardust go to the graveyard and wouldn't I be able to reborn him even if he never hit the field? If no, then how come I can reborn monsters milled from my deck which never hit the field?

Thanks a lot.