Talk:Great Fate, Frozen Stars/Rulings/@comment-27352927-20160403044449/@comment-24971427-20160406121010

Psh, not all the time. If that was true, how could you ever cast Green Dragon Shield before an attack? It's played when your opponent attacks. Dragon Chase activates when you are dealt damage.

Though, I don't see how that is relevant, since Astraeus's ability activates during the main phase, before the attack phase, so no attacks can be made, and Azi Dahaka will remain safe as you cast Dragon Chase when the Size 0 Astraeus's ability activates. One damage will be taken, and Frozen Stars will be destroyed.