Twilight Sparkle is thematic for a "group hug" deck, which means that you're going to give your opponents a lot of opportunities to draw cards and yourself a lot of opportunities to get Treasure
Donald's Enchanted appearance as the Flustered Sorcerer is illustrated by Rachel Elese and clearly shows the inclination to the Amethyst ink in its coloration
Those cards can appear in randomised booster packs or in dedicated box sets depending on the release
After Invert, theres a fairly marked shift in power level, with cards in the next tier being far more likely to see the light of day in Constructed
Its a creature deck at heart and can easily run over tables with a wide board full of 5/5 creatures with flying, haste, first strike, vigilance, unblockable, and whatever other keywords you can jam in
While it is trivial to get twenty or more creatures on the battlefield, if you have that many creatures, you can probably just win with those creatures