The Brothers' War Commander Deck set includes 1 ready-to-play deck of 100 Magic cards (2 traditional foil legendary cards, 98 nonfoil cards), a 2-card Collector Booster Sample Pack, 1 foil-etched Display Commander (a thick cardstock copy of the commander card with foil etched into the card's border and art), 10 double-sided tokens, 1 deck box (can hold 100 sleeved cards), 1 Life Wheel, 1 strategy insert, and 1 reference card
The sideboard is also pretty similar
The mechanic is meant to encourage blocking and force players to make smart trades in combat, but its unlikely to return because of a general shift away from that play pattern
Potential Circumstances for a Return : I would again point to Mutate as the potential home for Find // Finality, based chiefly off the power of Find
Fact or Fiction style effects are just fun for everyone involved, so this also ends up being an enjoyable commander to play against, too