Forum:Macro questions

Hi have a few macro questions

1.If crystal beasts are destroyed while Macro Cosmos and Dimensional Fissure do they get removed or do they go to spell and trap.

2.Can Iron Chain Dragon mill the opponents deck while Macro Cosmos is on the field and remove them from play.

3.If a card says 'send this card to the graveyard' ie Rare Valuecan it not be used.