Dies to Removal

There are a number of very strong Sorceries in the Modern card pool that would be made much stronger if they could be cast at instant speed. Leyline of Anticipation is nice there, and Quicken is good too, but coupled with Day's Undoing the cantrip part of Quicken sort of vanishes. But pack in other powerful sorceries, probably in Esper colors, and it starts making more sense. No idea if that would pan out as being competitive, but it does start to build itself.