Mark Rosewater and Eli Shiffrin have clarified that you can only cast the creature side from exile if the card was exiled by the adventure side resolving, not if it gets Path to Exiled
Hidegetsu deals half a player's life total rounded down, so when the two Creatures are used at the same time, any opponent with even life loses instantly
Unfortunately, I don't think there is a place for this card
While not technically Rush, the Jafar - Dreadnought can shift onto the smaller Jafar and attack immediately, so it can fill the same role as a reactive card
From there, players will draft two cards at a time from each pack as it makes its way around the table, building 60-card decks in all (down from Commanders traditional 100 cards)
Ravensburger needs to do better if they are going to continue offering Troves in future chapters