Each Commander Deck set includes 4 ready-to-play deck of 100 Magic cards (2 Traditional Foil Legendary Creature cards, 98 nonfoil cards), a 2-card Collector Booster Sample Pack (contains 1 Traditional Foil or nonfoil special treatment card of rarity Rare or higher and 1 Traditional Foil special treatment Common or Uncommon card), 1 foil-etched Display Commander (a thick cardstock copy of the commander card with foil etched into the cards border and art), 10 double-sided tokens, 1 Helper card, 1 deck box (can hold 100 sleeved cards), 1 strategy insert, and 1 reference card
Jitte was played during the time where the legend rule was such that if one player had a legendary permanent in play, and another player played that same legendary permanent, both would go to the graveyard
Discard is better than you expect
But expect this to drop as the set is officially released in Local Game Stores on Friday
I do think there's probably better options overall in both countermagic and removal, but hey, they exist