I could be wrong, but the timing and targeting restrictions seem too significant for it to be anything more
Each of the starter decks is about the same power level, and you should be able to easily get through all the Beginner PvE matches with any of them
The Jumpstart format has also been unbound from its paper roots where the original would simply give you a random selection of themed packs to pick from, WotC tells me it can better collate Historic Horizons packs to offer a greater variety of options and synergies each time, or even keep track of which packs youve picked previously to provide fresh options on your next run
Maelstrom Archangel The upgrade in value from a 5/5 trampler who can be cast for a cheap cost and draws two cards to this flyer that can let you get one free spell off each time you punch someone is pretty obvious to me
Sorcery Color tag templates(None) Spectral Deluge Return each creature your opponents control with toughness X or less to its owner's hand, where X is the number of Islands you control
Chandras tutor effect is tied to a -9 loyalty ability thats unlikely to ever come up in your typical game of Commander