Of course, restricting the Moxes proved the more important move on that front, and by the time Dingus Egg was unrestricted, Maysonet didnt even want it anymore
If there are multiple effects that attempt to modify how a creature assigns combat damage, that creature's controller chooses which effect applies
Stormbreath Dragon is excellent, although my guess is that people would not like it so much if not for Thundermaw Hellkite shaping what kinds of cards people think are supposed to be good
These effects work on any turn, which can hurt opponents strategies and ramp yours up immensely
Sometimes it takes most of your resources on your worries-free turn to have progressed your Game Advancement sword to be ready to close the game, but without easy access to haste in mono-white, you have to lean on Game Control in one of a few ways: you can phase yourself out or you can strip your opponents of their ability to stop you