I didn't end up seeing Web of Life and Destiny or the Arachnogenesis that I bought the day before because I couldn't bear to not add the Spider-Man variant of that card into the list even if it wasn't in the original box I opened
The same is mostly true of various Eldrazi which are obvious upgrades for the Zhulodok, Void Gorger deck
It does make it more likely that people looking just to collect sealed will probably be less likely to buy this latest wave
The "Power Nine" are Ancestral Recall, Black Lotus, Mox Emerald, Mox Jet, Mox Pearl, Mox Ruby, Mox Sapphire, Timetwister, and Time Walk
Since you're going all in on one creature, having backups and other creatures on the board isn't as necessary
Grand Crescendo is ideal for this because it has the protection spell mode, but if you draw it after the board wipe, it helps you rebuild whereas something like Heroic Intervention only works reactively