Its perfect for board control or punching through defenses
This is a bit of an edge case since they aren't proper cards and are not typically available in constructed play, but I think it's fun when things get weird so I OKed them (with the exception of Power Play, because it undermined the structure of the tournament)
Outrage is a solid "eye for an eye" move where it only gets stronger when your opponent attacks it
(Megamorph, the alternate-reality version, was not as much a hit.) I really like how manifest shows that you can take a core good design idea and extrapolate it to make something related, but different, that's equally fun
Crypt Ghast is probably your best extort creature because it also produces a lot of extra mana
With a free source of lifegain, Well of Lost Dreams turns into a value engine of incomparable power