We create both the cards and the mechanics by asking ourselves what it is like to be a human that returns to the world as a spirit, or as a werewolf that desires nightfall. The return of flashback very much fits into this design approach
Harry: This one's the real one
If the top card of your library changes while you're casting a spell, playing a land, or activating an ability, you can't look at the new top card until you finish doing so
Magics echo mechanic is as interesting as it can be confusing, so today Im gonna sit down and go over everything you need to know to get a good grasp on the subject
Its also a definitive stop sign against anyone sitting at low life or spellslinger decks looking to storm off
This means that its not very likely to receive any reprints anytime soon, as the cards will no longer be tournament-legal