Time Spiral removes itself from the game, which does not allow you to infinitely recur drawing seven cards, as you would with Timetwister (see further down the list)
Cards like Ghostly Flicker come to mind as ways to get a lot more value from your Summoner of Sphinxes
Well, for better or worse, that's not the case, and Vivi's returning with a vengeance thanks to the Final Fantasy scene boxes
I expect that well never get an instant for 1B that just destroys any creature, but the more options that we get for restricted removal spells the closer we get to having approximately that card exist for any given Cube
You can treat the four-stage summons like Ifrit and Summon: Fat Chocobo as creatures on your curve, while 3-stage summons are more akin to spells
Rounding out todays reveals, we have a couple of nice red spells