At the start of the second main phase, the Sphinx will trigger, putting a second starting phase after the second main (which stays even if the Sphinx is removed during the second main phase)
With planeswalkers and amass cards that are noncreature spells which function as creatures, its very easy to trigger Burning Prophet and the scry increases the probability of drawing another noncreature spell to trigger it again
If you controlled a saga with lore counters on it and no abilities, the old rules forced you to sacrifice the saga
The set has some hiccups with uneven power levels in its creatures and some of the bonus sheet artwork, but the vast majority of the set is fun and well-designed
This is because control decks are reactive decks (as opposed to proactive ones), therefore you have to focus on your opponents gameplan more than anything else
Players were then encouraged to go to a special trading area outside the Disney Theater, where they could trade cards with others to complete their list